She wants to become Muslim but her mother and grandmother are opposed to the idea

Your question this morning brought us good news and made us
very happy. Praise be to Allaah for what we have read in your question. We
understand the difficulties that you are facing and how you feel. We will
try to offer you some solutions to the problems you are facing. We are
impressed by your learning all the words of the prayer and of al-Faatihah
even though your language is English, and by your knowing Allaah since the
age of eleven and your becoming more convinced and certain of Islam after
three years, now that you are fourteen. We tell you the following, and
Allaah is the Source of strength: 

When a person believes in something, he will be prepared to
make sacrifices for its sake, so how about if this thing is Tawheed or
belief in Allaah Alone, worshipping Him alone, following His Messenger and
obeying His commands? Undoubtedly in this case the sacrifices will be even
greater. The Messenger (peace and blessings of Allaah be upon him) told
us that Paradise is surrounded with obstacles, and what that means is that
there is no way for us to reach Paradise except by overcoming obstacles and
putting up with difficulties. For the reward of Allaah is precious and its
blessings are immense and never-ending, and life there is eternal and its
joys and pleasures will never cease. So the true Muslim will be prepared to
sacrifice many things in this transient, passing world for the sake of that
blessing; he will be prepared to put up with the insults and slander of
people, with their criticism and mockery, for the sake of attaining that
blessing. There is something else good about this matter, which is that the
more a person is harassed and bears it with patience, the more his reward
will increase and the higher he will rise in status before the Lord of the
Worlds; indeed, his faith may increase and grow stronger, so that he will
enjoy bearing this bitterness with patience for the sake of earning Allaah’s
pleasure. The sweetness of striving to please the Lord cancels out the
bitterness of people’s anger, insults and criticism. If the harm he faces is
just some words of mockery or criticism that he heard, what is wrong with
his putting up with that in order to earn the pleasure of the Lord and His
reward? In all of that he believes in the promise of Allaah, as He said in
his holy Book (interpretation of the meaning): 

“So be patient. Surely, the (good) end is for the
Muttaqoon (the pious)”

[Hood 11:49]

He knows that patience
can only be achieved by the help of Allaah, so he asks Him to help him and
make him steadfast. Allaah says (interpretation of the meaning): 

“And endure you patiently (O Muhammad), your patience is
not but from Allaah”

[al-Nahl 16:127]

He is prepared to announce the truth before people,
regardless of who approves and who rejects that. If they reject it, he turns
away from them and ignores them, as Allaah said to His Prophet (peace
and blessings of Allaah be upon him) (interpretation of the meanings): 

“Therefore proclaim openly (Allaah’s Message
Islamic Monotheism) that which you are commanded, and turn away from
Al‑Mushrikoon (polytheists, idolaters, and disbelievers)”

[al-Hijr 15:94]

“and turn away from the foolish”

[al-A’raaf 7:199]

Hurtful words from relatives are difficult to bear, worse
than a blow from a weapon, but that will become insignificant for one who
bears in mind the greatness of Allaah and His reward, and he will continue
on his path without turning away or hesitating. 

Having explained this, we will now answer your question with
the following points: 

1 – You have done well by not raising your voice to your
grandmother, because respecting parents and grandparents is part of Islam. 

2 – Try to resist going to the church as much as you can,
because it is a place where the signs of Allaah are rejected and shirk
(association of others with Allaah) is proclaimed and a false religion is
practiced openly. Since you are female, you are not obliged to go to the
mosque as men are, so you will not be falling short if you do not go to the
mosque, because the best place for a woman to pray is in her own house. 

3 – Try as much as you can to wear hijaab, and put up with
insults for the sake of Allaah. Be patient in praying the five daily prayers
on time, knowing that they do not all coincide with the time you must be in
school. If you pray Fajr after dawn comes, then you go to school, you will
be able to pray Zuhr at school before the time for ‘Asr comes.  You could
find the time for that in a break between classes or at lunchtime, or after
coming home. It is important to pray Zuhr after the sun has passed its
zenith and before the time for ‘Asr comes. 

4 – If you treat people kindly, you will win them over in the
end and you will not be rejected, in sha Allaah. 

5 – Do not delay entering Islam, do not wait a moment longer.
For you do not know when death will come. So utter the words of the
Shahaadatayn (the twin declaration of faith) and start praying. You will get
used to the number of rak’ahs and the times of prayer, the words to say and
how to do it as time goes by, and this will dispel the confusion that you
mention in your question. So long as you are prepared to enter Islam, you do
not – praise be to Allaah – need the approval of your mother or grandmother,
or anyone else, because Allaah has commanded you to follow His religion: 

“And whoever seeks a religion other than Islam, it will
never be accepted of him, and in the Hereafter he will be one of the losers”

[Aal ‘Imraan 3:85]

6 – Look for Muslim
sisters with whom you can make friends and be in touch, so that they can
help you to learn the religion and remain steadfast in following it. There
follows the telephone number of al-Muntada al-Islami in London, so you can
call them and ask about the times of women’s classes; this may be a starting
point for you, since you live in the U.K.

[44-207-7369060]

Finally, we want to say again how happy we were to read your
question, and we give you the glad tidings of a happy life and good future
in the shade of the pure monotheistic religion of Islam. We are prepared to
help you as much as we can. 

May Allaah help us and you to do that which He loves and which pleases Him. And Allaah is the Guide to the Straight Path.