Yellow belly is a hard one for me to point out in combo morphs but I don't see any reason to just start looking for other morphs in her. The speckles in the alien heads are not as common as eyes or blank but you can find lessors listed on morph market that look almost identical to yours, speckles and all. Your not going to be able to just say it's some combo of morphs, it just isn't obvious enough. Stick with whats known, lesser or butter, until you prove her to be something other than that through breeding. Just one more reason not to get your ball python from a petstore. If you had plans of breeding, why in the world would you get your breeders from a place like that?