LoL Jen- Great Picture!
You will have to let me know how your Pup is when you get back. I will also be leaving my Pup in a few weeks for a vacation, and she will be 15 weeks also, she to will be with my Big Dog Butterfly. I feel the same way.. Just starting to get her trained, and now i am leaving her.. I do feel good about her being with Butterfly though, because she will still feel like part of the Family is still with her.. I actually feel worse for Butterfly, because she may think we abandoned her, and left her with the "Annoying little Pup". LOL
I think they will be fine though.
Have Fun!