If I had a snake that was almost roughly a year old and only 220 grams I would have tried live a long time ago!

Try live with her (something small that cannot hurt her) - I would be wanting to get some good weight on her since she's so small for her age. Sometimes some will just NOT take to F/T, and some will take a long time to transfer. I would just try to get her eating regularly, even if that's on live.