Help!

[u/AffectionateCry988]

hi!! so i got a 12 week old ball python on the 2nd of august this year shes on rat pups at the moment, she had eaten the week before that on the 26th of july but hasnt eaten since then, i offered her food on the 13th so a 11 days after i got her which she did not take, and then ive offered about 5/6 times? is this too much? its like every 3/4 days. Ive done the warming it up method, pin in the brain method and ive been weight her, im quite worried because from the 15th of august to the 26th of august she lost 12 grams, unfortunately i wasn't very smart and forgot yo weight her as soon as i got her but apparently she had eaten 6 meals and striked at them. i offer her a pup today and she striked at it, i closed the door and turned the light off, 5 minutes later i checked again and she had dropped it, i picked it up with tweezers to try again and she seemed interested but shaky and didn't take it, should i be worried? Is there anything i can do?