Thanks playfelt, that is exactly what I meant. You are so right....it ends up being about the parent and not the child.
You have a good point....it can be done with a sippy cup as well! If I run into this issue with a parent again I will remember to tell them that a sippy cup while cuddling would be an easier transition for the child. The problem with either is that sometimes the child becomes so dependent on it that they have a hard time falling asleep without drinking something and that makes naps at daycare incredibly tough on the child! (and the dcp! lol)