Help please no idea what to do

So this dog isn’t mine it is from my FIL and since he isn’t in USA my mil move to my house due remodeling their house.So they also move their dog.Dog isn’t trained at all she barks all the time if I’m standing with her she okay but if I’m in the house she barks so loud.She is hunting dog so she is all the time outside on chain.I know that is neglect but my yard isn’t fenced so she could run and if she runs my FIL will be pissed off at me.

So please tell me what to do to stop barking.

I’m 6 months pregnant and I can’t go outside all the time.

Edit: it is just one dog.Me personally don’t have dogs just this one that belongs to FIL.And to bring dog inside I can’t she isn’t trained and honestly Im person who don’t allow any animals inside house.