Ah this is driving me nuts!

when did your baby start rejecting the bottle??  She is almost 10 months.  she is hungry but wont take it, tries to feed herself, but doesn't hold it up enough to drink it and not air... i would give her a sippy but she wont take that either

formula is gross.. try it.. now that shes eating real human food she may not be interested any longer... how much is she getting? if its more then 20 oz i wouldnt worry.. the older they get- they less they need.. is she teething? if so it may hurt her to drink it

I had to get my daughter one of those sippy's with a straw because she would not tilt it far enough. She was drinking out of a regular straw at 6-7 months, not sure if that would help.

she uses a straw sippy but will only take a few sips before she throws it on the ground or finds the only hole where the cup is not leak proof

Do you have a reclined seat you can put her in while she drinks? That may make it easier to hold the bottle up. Also maybe use a smaller bottle and then give her a refill if needed.