Surrogacy?

I'm thinking of being my cousins surrogate. She has a small tumor that presses on her pituitary gland and her hormones are all crazy. She has had 1 baby from IVF (she's such a great mom and has baby fever) but her pregnancy was rough and her doctors advised her not to have another. However she still has a couple frozen eggs. I've also had 1 child and had a very healthy pregnancy and baby. I was thinking of asking her if she wanted me to carry her child. I couldn't do this for just anyone but I could for my cousin because I know she is a AMAZING mom and I would still get to have a relationship with the baby. I don't want any compensation just giving her the gift of a child would be more than enough. (Her insurance would pretty much cover everything. They covered her in vitro in full) What are your thoughts and opinions? Should I lend her my body for 9 months?