G.B.
You have good valid points but I just wanted to point out something you stated, just so you can think about it.
"What type of parent would keep a child away from the other parent this long when they have a great relationship with both mother and father?"
When she is with you you are in fact keeping the father from not seeing her when he wants, unless he sees her regularly on a daily basis or something close to that. He probably feels the same way you do and misses the child as much as you. So if he says no then maybe you can be a bit more empathetic to him.