Stay strong and don't give in to them. I think you should see if your vet will let you make payment plans... Is your name on all of her paperwork? My mom wanted me to breed Lola and told me it was easy also... when she was a kid their dogs had puppies all the time. She was upset that I wanted to spay her... I saved up my money ( i'm in college also
) made an appointment and took her in. Tell them your grandmother may have payed for her, but Abbey is YOUR baby and you will do what is in her best interest