Don't sweat it. Very common during the winter months. She should pick back up by the end of this month. My 700 gram female ablino has done the same thing. She was hammering a ton of rodents, then she went into a shed and she hasn't eaten since then. I offered her rats, pups, mommy mice, large mice, she just doesn't want to eat. I always feed her first and if she doesn't take the bait (so to speak) within the hour, the food goes to another snake. Not a big deal. She's lost about 40 grams, so I'm not concerned.
Good Luck!
Jim Smith