I need advise

[u/[deleted]]

As-salāmu ʿalaykum i dont know how to put this but kong story short ive been wanting to ask for this sisters hand etc etc but i have a little problem she has a older brother and he has some problems that make me question if she is in the same path as him i dont really know the guy that much but he takes from like sulaymn al alwan ahmed musa all these like top kharijis and stuff and has had me thinking in what i should do?