anyone ever force feed an adult??

[RebelArtt]

i have an adult female normal ball python. she is 10 years old & refuses to eat. i've tried live & frozen. i've tried pinkies, fuzzies, hoppers, adult mice, rat pups, rat fuzzies, small rats, & medium rats. she wont eat anything. i have 5 other balls & 4 corn snakes that are eating fine. i haven't bred her & her temp & humidity is all normal. i know her previous owner used to hibernate her ((previous owner only had her for 4 years)) but i've tried to get her off of that habit in the 6 years i've had her. she normally doesn't stop eating for this long. she started refusing in november, like normal. but she usually starts eating again come mid jan.

the vet said there is nothing medically wrong with her.

what should i do??? has anyone ever force fed a 4 foot ball???