Refusing Milk

Is anyone having a hard time transitioning their baby to whole milk? My little one has been on hypoallergenic formula since e she was a few months old (which tastes awful to me personally but she likes it). She tolerates whole plain yogurt fine and cheese. She just doesn't seem to like the taste of milk. I also tried Ripple but she doesn't like that either.

Is cows milk really an absolute necessity in a toddlers diet? She eats a variety of veggies and meats as well as cheese and yogurt so I am not too concerned. Plus she is staying hydrated with plenty of water with snacks and meals. Anyone else's baby rejecting whole milk?