Just putting this out there... this is my first reddit post EVER and I’m hoping for some good feedback.

 Ok so me and the gf are cat ppl, we have 2 cats and we’re very happy with them. Enter her 20 something yr old daughter that currently lives with us... she decides that she wants a dog and goes about it the right way asking gf if we would mind her getting one. She gives us the whole “it will be my responsibility and I’ll take of it” speech so gf agrees and gf daughters bf gets her a mini weenie dog. Fast forward a yr and she’s hardly ever staying here, leaves the dog that spends his days either barking or crying (not to mention using the hallway for a restroom) here while she goes and stays with her bf for days at a time and refuses to take him with her and won’t allow us to find him a home. I feel like I’m the bad guy for not wanting the dog here anymore because aside from being annoying he’s not a bad dog just needs some attention that no one cares to give him here. Gf won’t put her foot down and I’m reluctant to say anything bc I know it will come out of frustration and sound assholish. I honestly don’t know if it’s me and I need to just chill or I’m in the right, what I do know is that I’m not comfortable in my own home. So new reddit friends AITA??