So here's what I made for her sister, Erin:
Instead of a traditional border, I wanted to keep it "dog-themed" and made a fondant leash wrap around the base of the cake. And before you begin to panic about the dog food, it's actually Cocoa Puffs.
I hope Erin had a great birthday celebration, and I hope my cake made it safely to Minnesota (my first out-of-state cake...tear...). Happy Birthday Erin!