ask the breeder for her hatch date and hatch weight. its possible she was a twin or came from a boob egg and hatched at 35 grams or something.
Also.. if you've tried "everything" to get her to eat in the past month you're trying too much too fast. Slow down.
A live mouse hopper will usually get them going. Feed at night, in a dark quiet room and don't pester her. Check on her every 45 mins or an hour to make sure she is ok. and PRE SCENT. that way she starts getting into the feeding routine.
For more help, what are you housing her in, what are your hot/cool/ambient temps, what is humidity, what are you using to measure all this with, what are her hides, etc.
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