Is it permissible for a Muslim woman to ask a Muslim man to marry her?

She has committed haraam actions with her fiancé

Marrying a woman who is not chaste

His son got to know a girl through chat rooms, and he wants to marry her

Intercourse and masturbation with one’s fiancee

Is it permissible to refuse a good Muslim for personal reasons?

He has contacted her several times saying that he wants to propose marriage, but she does not know anything about him

Chatting Before Marriage in Islam

She has received a marriage proposal from a person who has some shortcomings which she is trying to deal with and discuss

a fiance to be alone with his fiancee