I (32F) have a 6-year-old rescue dog who is extremely anxious and territorial, but she’s made a lot of progress over the years. She’s finally at a place where she can relax in our home.

My sister (29F) has a service dog for PTSD. It’s a legit service animal, not an emotional support dog. She recently asked to come visit for a few days and, of course, her dog would come too. I told her I didn’t think it was a good idea because it would completely undo all the work I’ve done with my dog, and she’d be a wreck.

I offered to pay for her to stay at a pet-friendly Airbnb nearby, and I’d even cover her meals. She got really upset and said I was discriminating against her and “choosing my dog’s comfort over her medical needs.”

I just feel stuck. I love my sister, but I also love my dog and I’ve worked so hard to give her a calm space.