Caring for someone else’s child

Hi. This a really complicated topic... I was recently asked by my cousin to possibly take on her daughter. My cousin has a few learning difficulties. This is her 2nd daughter. Her 1st daughter is in the care of her parents. Her daughter is 6 months old. Iv never met her but I feel so sorry for her, the thought of her being taken into care.

I have a 4 year old daughter myself and have always thought Of another baby but this isn’t the same thing.

I would be a good mum to her, I love children. It’s a lot to take on I suppose...

just asking for peoples views on it really.