I didn't intend to drip feed or mislead or seek to push for specific answers like 'report it'. I'd only just found out about what happened from DD and I posted in the same way i speak; give an overview first rather than a massive monologue with info which then elicits tons of talk about the dynamics of the adults.
The title - well i've just been ranting a bit to DH saying ''No body bloody fed the baby!''. So i just called it that.
I've been on MN long enough to realise this wouldn't be a simple thing to ask (it's a bit like being in a court law sometimes!) i can understand the want to know more detail. That's my fault. I also know this is going to run and run based on only my OP! But hay ho.
So for anyone still reading i'm the mum of the mum)(i have 4 DCs, youngest is still primary age, baby's mum is late 20s so is the father) I look after the baby at mine one day a week while DD works from home. Recently DD has started going into work one day a week and on that day baby is left at home with the father. She's a wonderful mum who leaves all the food and equip ready to use for baby. The father has recruited his parents to pop in and share the care because ... to be sure, i don't even know - he finds it a lot on his own or something (trying not to eyeroll)
When DD got home she found the baby grumpy, hungry, the sippy cup empty and unused all day and asked the father what had gone on and he gave the details of his parents trying to give the baby something DD had not meant for him to have, then making a scrambled egg (also not what baby usually has) baby accepting a bit of the egg at 12 and admitting that nothing else was given after that.
That's all i know. I'm angry.
Thought about it in the night and I'm going to offer to have the baby for the day on DDs work day as well now, because i, like many others here, just don't understand how this has happened and it can't happen again. I can't control the actions of 3 adults unrelated to me in another house when my DD has gone out, so i think i'll just gently offer to have baby for another day a week.