I think that if you keep up the good work and follow your heart and your hp you'll be fine. I get what your sponsor's point is but 4 or 5 meetings a week at 1.5 years!?! When you feel like you need another meeting, go. If your schedule is working and you're feeling good, stick with it. I personally wouldn't keep a sponsor like yours. She sounds like she's on a bit of a power trip imho. It's okay to say no sometimes.
-Ted