girl won't eat and bright green poo?

OK. So I've had my girl since March of this year and she was a little unfed but other wise healthy. I got her from someone who no longer wanted her. When I got her she weighed 1200 grams and she's around 5. I moved her up from small rats to large rats and she ate weekly like a champ from March until the first of July. I've been checking her tub and offering a f/t. Rat weekly. Nothing has changed and her temps are good. She's one of 26 and she's the only one off feed. I know they do this but I need to get her back onfeed because she's one of my breeders. She's lost about a 100grams . Well tonight I check on her and she's got little specks of florescent green poo in her tub. She's never done it before ...is this common and any tips on getting her to go back on feed? I've tried all the standard advice besides feeding live.
She weighs a little over 1600 grams now.

are you breeding your own feeders or purchasing them if so from where?

I get my feeders from rodent pro

rodent pro is a great company! what are you using as bedding in the enclosure? what are the temps and humidity in the enclosure? from what you are saying it could possible be an internal parasite.

The green poo is almost certainly urates. Mine periodically make florescent green piles, too. It's alarming, but still normal.

So is going off feed for a month or more. It's a weird time of year for it, but you're not the only one with an animal doing this right now. It's basically hormones. You can try pairing her early, before she loses too much more weight, see what it gets you? Some girls produce follicles at weird times of the year.

I use reptibark for bedding. Her temps are around 90 on the warm in and high 70s on the cool end. Her humidity is around 50% at the moment. She has a couple of hides and a bowl to soak. I use a tub rack system and she's been doing great in it. She just randomly went off feed. Has no interest in it what so ever. Yea never have haf a problem with rodent pro.

The poop is weird. I would try and bag some and take it to the vet to get tested. Perhaps she has some sort of parasite that is causing her to go off feed.

If there isn't anything in her poop than she is probably being a typical ball python. They like to just stop eating whenever they feel like it.