Thank you @meesterboom :-)
Yeah, one of my ex's cats died the same way. He stopped eating, but seemed hungry all the time. In the end it was so sad, we had to put him to rest. I'm glad my mum's cat got saved the horrible hunger feeling and she went in her own home on her own time :-)
Yeah it's good when they get to go in their own time. I had to get one of mine put to sleep and I still think about those last moments