OH how cool...congrats Tisha!!
I have to say I love the name Pixie and it stays with the "P" in Parker!
Also wanted to say I had Murphy first and than bought Mia from a breeder when Mia was 7 months old. She took to Murphy pretty much within about 3 - 4 days. Also her name was orginally Louise and I renamed her to Mia to Match Murphy right away. It took no time at all so I am sure your baby girl will be fine.
BTW she is just adorable. I can not wait to see more pictures of her and that adorable Parker!!