Abby OSU visit

We had to rush Abby to osu tonight, for what the vet says is a really bad colic,she has to have surgery  now or I'll have to put her down. I can't lose her she means everything to me, they need 3500 to even start and she's in A lot of pain. Please help me save her.
Abby did not end up making it. During surgery they ended up finding that a greater part of her Small intestine was dead, and she had further complications. They are looking into it further so that I may have some kinds of answers. I appreciate any all help you guys have given me. I know she's In greener pastures, but it's incredible hard to say goodbye.