Ok, now what do I do with her?

After 6 months of trying different bottles, we've finally found one that Sophie will take! It is the Playtex Drop In with the latex nipple. She takes it great! However, many of you told me not to give her a bottle, just give her a sippy cup. She won't take a sippy cup. I've tried and tried it with a soft spout sippy cup with handles. I even took the lid off and put a little milk in her mouth so she could understand there was something in there. She just chews on it and won't even suck, not once. What do I do?