Jasmine,
I went through a similar situation in Jan, I was a little further on than you my daughter was born at 27 weeks. She had different abnormalities but the outcome was the same.
Her labour and delivery were handled so gently with such care and respect by the staff, they were amazing. Sadly for me it ended as a emcs, but that was due to three previous sections. I know it is normally a much smoother process.
It was very important to keep our daughter after her birth. We kept her for 24 hours afterwards. I dressed her, held her cuddled and kissed her. I would keep those memories above all others. She is your daughter and if you want to have her afterwards the hospital should be supportive of that. We took many photos of her and have her hand and foot prints. I would really recommend having these even if you can't face them straight away. I look at photos every day for me it has been a huge help but of course we are all different.
I am unsure if the legal point of 24 weeks make a difference when dealing with her remains. As we had to register has a stillbirth we had a full funeral, she was cremated and I have a gravestone. I believe you don't have to register her birth but should have complete control over her remains. I have found it so comforting to have a place to go and visit her and to take her things.
I am sending you so much love and hugs. I truly understand how you feel. I hope it goes as painlessly as it can. Ask for as much pain relief as you need. Be gentle with your self afterwards.
If you feel like you want to talk to someone who has been there please pm me.
I am thinking of you and your beautiful daughter today xxx