Assist feeding didnt work, snake thin

[Stewart_Reptiles]

I know this forum is flooded with feeding problems, but I'm looking to see what I'm missing with my problem banana hatchling. I'm quite worried about her. I have other BPs and they are awesome feeders.

Her set-up: 10 gallon aquarium with all sides blacked out with dark construction paper except for top 4 inches on the front. Top 3/4 covered with damp towel to maintain humidity at about 60% (with lots of variation, cant wait until her pvc setup arrives). One side heated to 86* using underbelly heat and thermostat. Cozy hides on both sides, water bowl in middle. Quiet room, normal daylight cycle.

What I've tried:
First 5 days after arrived shipped- left her alone to acclimate
Day 6: attempted F/T hopper mouse, heated a few minutes under heat lamp
Day 8: shed (perfect)
Day 12: attempted F/T hopper mouse, heated a few minutes under heat lamp
Day 17: attempted live small hopper mouse for 15 minutes, she acted terrified
Day 22: attempted F/T pinky rat, heated a few minutes under heat lamp
Day 28 (today): attempted assist feeds of F/T fuzzy mouse. She spat it out the first try. The 2nd try she tried very hard to spit it out and it was lodged on her bottom teeth. I had to lift and push the mouse in a little and she spat it out the rest of the way. Worried that her lower jaw may have been minorly injured, but I didn't see anything. (assist feed description- held gently on either side of her mouth while resting most of her body on towel, mouse pushed 3/4 of way into mouth, gently set down and then I didn't move)

She's quite thin. The only other thing I can think of is to move her to a tub of some kind, which I'll go buy tomorrow. I may be trying to often (every 5 days). Any other ideas or suggestions?

It's not about assist feeding it's about providing optimum environment which you do not.

You assist when the animal never ate and refuse to take his very first meal (hopefully you did not buy an un- started hatchling) or when there is an health issue and this is the very last resort.

If the animal ate before it will again if you fix your husbandry do this to a T and do not offer that often switching prey type each time you are making it worse http://ball-pythons.net/forums/showthread.php?t=237595

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