I am an Algerian Muslim man who is living in England. I want to get married to a Somali Muslim woman who has a kid. When she was young she used to have a bad relationship with her dad. When her mom died the relationship worsened and at the age of 17 she moved to her aunty's house (who she calls mom). When she reached 19 she wanted to get married to a man who was Somali but her parents didn't allow it. Then she got pregnant without marrying the man. Since then there has been no relationship whatsoever and she has been living alone with her child. No one was helping her in whatsoever way except for her uncle who is a really nice guy (mashallah).
Now we want to get married but her father and older brother refuse just because I am not Somali (it seems). And her dad has no knowledge about Islam so even if I talk to him about this religiously he wouldn't understand. My question is will he still be her waliy, and what should I do if he refuses again?