Hi
my DD drinks OK at nursery but will hardly touch a drop of anything at home. She was breast fed and refused to touch a bottle. We have tried countless types of cup and even juices and milkshakes in our desparation. She just bats away anything we offer her. Given a cup she just puts her hands in it. If she does take a sip of something she often opens her mould and just lets the liquid come back out. At night we offer her a drink before bed and she takes it but then won't give the cup back.
I think it's a control thing.
Anything else to try?