Can a financially independent Syed girl who wants to marry a compatible boy to avoid sin proceed with the marriage if she is certain that her father will reject the proposal due to an invalid reason related to not being Syed?
Father is not allowed to reject his daughter's marriage with a compatible believer when she wants to save herself from sin, just because of a cultural reason which is never a condition in Sharia.
I advise her to contact her Marje’ of Taqleed to explain to him his situation and seek him guidance.
You can get the email address of the main Maraaje’ of Taqleed in the Internet.
Wassalam.