PLEASE help mama cat and her babies

Yesterday I had the amazing surprise on my third-floor apartment of a feral momma cat under my couch protector on my outdoor couch, who had birthed 3 babies. She had no resistance to me and let me take her inside with all the babies and keep her warm, safe, and fed. The morning after, she is not doing well as I believe she may have a baby stuck inside her. She is hemorrhaging, puking, and not doing well at all. She needs emergency vet attention and I am WAY over my head in this situation. I am a mom with a kid and a dog on my own but I am way too invested in this to not continue to help so I am reaching out to the community. I need help with vet fees, food, supplies, and eventually getting the mom spayed and shots for all 4 of them. Every single dollar helps. Also PLEASE pray for this momma!! These babies need her to survive. SO much gratitude in advance to everyone willing to help.