I have a 2001 HET albino female, from a clutch of 2.3, I have all 3 of the sisters, from a male albino to normal female.
All three were similiar in size when I bought them as babies.
One day one of them stopped eating, well that was EXACTLY 10 months 18-days ago. Finally the other night the one that has been fasting for almost a year ate. She took a small mouse, but I HAD to standby and place a small rat in her mouth to give her a good meal, because after 10 1/2 months you figure it was a freak accident she ate
Well she ate again last night, which makes 2 weeks in a row.
I'm afraid to get excited about it 
The estimated weights on all 3-sisters as of recently are :
1450-1500 grams sister #1
1000-1050 grams sister #2
420-450 grams sister #3
The story on the albino female is also somewhat similiar. I brought this snake home, set it up in a shoe-box. Five days after I had her, I took a chance and offered her a just weaned rat (I still think rat feeders are more robust animals and grow faster) that is just my opinion, and I am in no way a professional with BP's, but I am seeing this rasing a group of 32 normal females some rat feeders, some mice, some both.
Well she slammed the RAT fuzzy no problem, the next 4 feedings after this went fine, she was still in the shoe-box, and there was no cage switch, but she just stopped DEAD in her tracks, stopped eating cold turkey.
I was all excited at first I said WOW what luck an albino that POUNDS RATS... Well I'm not so excited anymore 
I guess there all different, I considered that 1 HET albino girl a total loss, but now she started eating, who knows maybe she will continue..
There are so many things to try and things you try to think about what may be the cause...
I swear this is true, I have a single 2002 albino male, he stopped eating atleast 5-months ago, but before the FAST he went from roughly 80 grams (hatchling weight) to 700 grams.
Being he was a male and was at 700 grams within his first year of life I didn't worry about him. Well 5-months passed, he starting looking really skinny. I moved him to a larger cage, out of desperation, I thought it may cause him to eat, but at the same time I added a new hide-box, a cereal-box to be exact.
A week passed and I could tell he liked his new hide, he always stays in it. I offered his usual meal, RATS, this snake was raised on rats 100% and never saw a mouse. Still he didn't feed, so I then offered a mouse, guess what he slammed it. I did place a small rat in his mouth as he swallowed the mouse, (the mouse was SO small).
I have no idea why he started to eat all of the sudden, was it the new hide-box? Was it the larger cage? Was it the mouse instead of the rat? Or was it just time to break the fast? Should I offer a mouse agian the next meal or back to rats?!
I love em, but MAN they can BE SO frustrating at times..