What is the ruling on a father preventing his daughter from marrying who she wants?

Her fiancé refuses to let her wear hijab

She loves her cousin and he has proposed to her but he does not pray apart from Jumu’ah (Friday prayer)

He got to know her through a forum and he wants to propose marriage to her

How can he find out about the one to whom he wants to propose?

He is asking about marrying a girl who works as an accountant in a tobacco company

He proposed marriage to a girl and she prayed istikhaarah and saw them both and their families in Paradise

He loves his fiancée but she wants to cancel the engagement; what should he do?

He wants to propose to a woman in another city; can he ask for her picture?

He loves a girl and her father agrees to them marrying but her mother refuses