Puppy won’t use bathroom outside

Hey, me and my girlfriend recently got a puppy. she’s been super good with using the bathroom outside. But with it being the winter season and us having snow all the time now she only wants to play outside. She doesn’t have free range of the house and one of us is always home. she gets all the things she needs to be a good pup, she used to be able to left out the kennel without watch for a while without worry (4 month pitbull / husky). but recently she will not use the bathroom outside. like at all. Me and my girlfriend set 15 minute timers and have a designated spot for her bathroom which she did super good at. But now bc of the snow she won’t, even when she’s taken out every hour with no entertainment during these bathroom breaks. She doesn’t have free range of the house yet and she also knows this due to not going in certain rooms without being told. but she just pees and poops only inside. i’m trying my best to stay afloat and work with her but it feels impossible when she is being taken out and worked with by someone at almost all times of the day for her to just go inside the house literally the moment she comes inside. and she knows it’s wrong bc when she uses the bathroom inside she’ll do it while looking at us and will run to the other dog. my landlord is being weird about our other dog now also, and i don’t want to give up one or both. the puppy is super goo outside of this and her training is great but she has been running the walls due to where she uses the bathroom inside.