Being that she was raised til you got her in a kennel, she really has no clue where she is supposed to go potty, and her new home isn't a home yet in her mind.  Start out crate training, and make her crate the most awesome place in the world for her- yummy treats hidden inside for her to find, toys, comfy stuff to sleep on, and NOT more room than she can comfortably stand up, turn around, and lay down, or she will use the extra space to potty. They usually won't potty where they sleep, so that makes her crate her "home" and she won't potty there unless she has no choice. As she grows, slowly add a bit more room as needed, and extend her "home" to a bit of area outside her crate, then as she "gets it" slowly give her more and more room, and eventually her "home" will extend to your entire house. RIght now, she just doesn't know better, and puppies her age don't realize they can control when they potty, let alone hold it til they are where they are supposed to be when they potty.