So sorry to hear about all your problems and really cannot help practically but wanted to let you know that exactly one year ago we lost our little seven year old cat suddenly just like your Baby. Our cat was perfectly healthy and showed no signs at all of any illness, went to bed as usual and we found her dead all curled up in her cosy bed in the morning. I realise your circumstances mean that you feel there is some blame to be laid at the foot of those who were supposed to be looking after her, but I just wanted you to know that these things do happen and it just might be that she died peacefully without any suffering just like our lovely little pet. Her friend was very lonely, but we have replacements now. Good luck with getting your two other cats away from this terrible situation.