My niece turned 15 last week. She is my brother’s daughter who passed away almost 15 years ago when she was 2 months old. It will also be 15 years that I’ve been in the U.K. as he died the week after I landed. Her mum has agreed she could travel alone and we are using the unaccompanied minors service from Qatar. We are busy with her visa and I have a few questions please.
1. On the application it asks for our relation and I put aunt. Was I supposed to put Father’s Sister and do I even fall under their definition of a family member as per

2. Also it only asks for a letter from her mum confirming her travel arrangements for the visa (I’m aware of all the docs needed as a South African to pass customs) I’m asking for visa only. Does someone have a sample letter I can use please?
3. Wouldn’t I need to provide proof of my money, house etc. I have 2 daughters her cousins who is 12 and 9.
Please any help we need to submit tomorrow.
Thanks