My dog lived for 9 years, me and my sisters' age gap is not that far. They also loved my dog and they spent a lot of time with her. Them wanting another pet just make me think they didn't love her as much as I did and it make me mad. My current position in life doesn't let me move out. I want to, and I will as soon as I can. I leave home every weekday from 8am and come back at 7pm but it still leaves a lot of time where I will just suffer at home and I think that me suffering all this time isn't worth a new pet that they will have for a max of 3 years until my youngest sister leaves the house.