Well..
I used one brand new bag of f/t pinks once. I normally feed my own raised pinks live, as its easier for me, but I ran out and the kiddos needed to eat. So about 18 hatchlings got f/t pinks. 2 days later I had 16 regurges.
Let me tell you, the stench walking in the snake room almost keeled me over. I threw out what was left of that bag and opened another from the same order, not a problem since.
So I would say to look at getting a new batch of f/t (its always nice to have a back-up in case of emergencies anyway) and maybe get a fecal sample to your vet to see if maybe something's going on.
One thing that does help with frequent regurges is to wait 10 days, minimum.
Try slitting the skin of the f/t pinks. It really helps them to digest it faster as the stomach acids/enzymes can get inside the body cavity better. If you think about it, fresh food has a little longer before it spoils after death. Already dead and frozen/thawed things start to turn rancid in a few hours after being thawed. At least from my own observations when leaving pinks with snakes overnight.
So maybe by not allowing him/her enough time to rebuild up the gastric juices to optimum levels leaves the snake with a meal that's going bad faster than it can digest it, ergo a regurge.
You may also try dosing a live pink with Nutribac (available online) or there's even kitten/puppy probiotics that you can buy at Petsmart which have worked for me. That helps to repopulate the gut with beneficial bacteria.
:-offtopic
Just so you know, taking delight in another animals' suffering is really quite immature and sick. Even if it is only a mouse.
AND you really need to learn the difference between: there, they're, and their. They're all different words with totally different meanings.
When she can keep down a couple of smaller meals, you can then increase size. Every five days is good for a hatchling once she's back to eating fine. Good luck!
