My sister works all day Saturday 10am - about 6/7pm and leaves her DS (13) home (or out and about with a key) as he won't go to his dad's with his sisters.
Today was the local fair. DN went out this morning whilst his mum was at work and won himself a fish knowing full well his Mum wouldn't be home until at least 6pm and that he had nothing in which to keep/put it.
DN then turned up on my Mum's (his GM) doorstep shortly before we were due to go out and dumped the bagged fish with her as he's got nothing to put it in and wants to go back out with his mates. My mum then turns up on my doorstep with said fish saying DN has dumped the fish with her and she's got nothing to put it in and my sister is probably not going to want a fish and hit the roof so can I deal with it. I had nothing to put it in either but knew it would die if left it for hours in a tiny bag with little water, so I put some water in a small bowl and emptied it out in the hope it would be ok for a bit as I was off out with my Mum.
Whilst I was out I bought the fish a tank (fish bowl) and some food, came back set it up and put gravel in and added fish.
My DS (3) has got a bit attached and has named it and been sat talking to it all evening.
At 8pm (7 hours after dumping it) DN turns up saying he wants his fish. I told him we are keeping the fish since he didn't care enough to sort it out himself this afternoon and it has cost me money to both keep it alive and in decent conditions and DS has become attached and since it is now in a tank and not the bag he left it in (and would have died in) he has no way of carrying it home. He got really upset and ran home crying and now I don't know if I have been a bit mean.
So I want to know WIBU to tell him that he is not having the fish back?