I think she's made it clear she does not want the responsibility of the dog. I think it would lead to resentment if she has to take care of it. How about foster care until you can have him?

Otherwise, I think your reply is great.

M:63
H:53
S:41, SS:28, SS:25, SD:23
M:15
T:16

Bomb:12/17/11, "I think we should go our separate ways."
H moves to his mother's house, 4/1/12
12/21/12: H moves back home, piecing