9-month-old not drinking milk

Nicole • Mother, wife, surgical assistant. I have the unpopular opinion.

I need help. My daughter had an allergic reaction and we've got it narrowed down to a few things, one of which might be silicone.

She was using the Munchkin 360 cups, so until we know it isn't silicone, she can't use those. I went to Walmart and bought every cup I could find without silicone; she hated all of them, and is protesting by not drinking her milk.

What the heck do I do??