Ball python not eating

[Bogertophis]

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4. Mouse fuzzies
5. I use warm water submerge for 20 minutes and I feel it to make sure it dont feel cold anywhere before I feed her...

Not only should the prey not be cold, but you need to actually WARM it up so it seems life-like to a BP, because BPs are one of the kinds of snakes that relies on their
heat-sensing pits to identify their prey.

You were apparently lucky the first few times you fed her...her hunger won out, but for best results I'd recommend immersing prey in very warm water briefly, but only
AFTER thawing completely in cold water, before offering...& many here take an additional step of using a blow-dryer immediately before offering the prey to their BPs.

If you do this, I believe your problem will be solved.