Re: Complicated situation
Never thought I’d actually agree with third string EVER but poetry this early is a little creepy. Depending on the girl you don’t want to come off as too strong too early and don’t do things that she would find creepy. It’s best to learn her style and learn what kind of things she finds cute/sweet. There are so many ways to be chivalrous and each girl likes it differently.
To answer you questions, there are two ways to approach the situation. Since it is in your mum’s hands now you should either let her approach B’s parents OR you need to tell your mum and the sister and whoever is involved to take a back seat for a while until you get to know B personally and see if she is interested, gauge to see if your personalities mesh well together and if you have similar goals/vision for the future and genuinely get to know her and make a decision if you want to spend the rest of your life with her.
If she is interested, in a few chats you will know as she will either push you away by being distant or non-responsive or tell her family that she’s not interested and they will convey the message. Make good use of Ramadan and make lots of dua and work on your deen and overall self and when the time comes to have a chat with her you’ll be more confident and she will also have some time to think about you.
Good luck!