Oyyyyyy! Well..I would treat it like she's not housebroken. It's not uncommon for them to revert and start peeing and even pooing at about 7 months..I'm not sure of Roxy's age?? If you don't get it under control, it can be a long term problem. But the good news is..if you clamp down and go back to puppy training, she will get the picture very quickly. If you use a crate..back to that for a couple weeks. Put her on a leash in the house and correct any signs of her going quickly and consistently. Start taking her out every couple hours. You remember all of this..right? She just needs a refresher course!
Get a good shampoo and get her scent out..I like Nature's Miracle. Don't worry..she will get it right away! She's testing you and probably a bit uncertain in her new home.