Hello, I am a brand new mommy, only 1 week in, and Kendall, my adorable little puppy, is GREAT about using her pee pee pads when shes in her exercise pen that has her bed and one pee pee pad. I don't keep the door on it open, so she'll stay put when I go to work and at night. My problem is that when I take her out, she doesn't use the other pee pee pads that are in my home, outside of her pen. Can someone give me some advice? Thanks!