Marital problems

Q: My Husband's mother is a non Muslim and lives as a lesbian. I don't want to be seen in the road with her and do not like going there, nor do I want to send my daughter. My husband thinks I don't like his mother but it's the fact that her lifestyle is disgusting and I am trying to protect my daughter from this. Am I wrong in not wanting to be associated with her and don't allow my daughter to go there without my husband or myself?

Islamic Banks

Q: Could you kindly tell me whether Islamic banks are halal if I decide to buy a house? As far as I know even Islamic banks are not 100% halal. How do I know which Islamic banks are genuinely Halal, what are the signs?What do I need to to consider? Most of them claim to be Islamic and according to sharia law but it is sad to know that it is the same as taking riba at the end.

Keeping a distance from one's sister

Q: I have an elder sister. She is not a good woman. She is a woman with bad character. She is married but had many affairs outside marriage. She is always in modern clothes and not Deeni at all. She just wants to trick men and sleep with them. I hate her. She also does gossiping about me to my friends. I am planning to get married soon. I fear that if she meets my husband she will try to tempt him and fill his ears against him. So, I want to stop talking to her so that she does not interfere in my married life. Can I do that? Can I stay away from her to protect my marriage?