hi berryberry44, I hope you and your gran are doing as well as possible, I'm so sorry about what you're going through.
I don't know if I can really suggest anything very helpful- but I wanted to say how sorry I am.
I would keep trying to ask if you can be allowed in, on compassionate grounds. Like you say-even though they have other residents, if one is close to dying, you would hope they would try to let you see her.
If they do at all, or even if they would do it- you can give fortisip or water by mouth, using a plastic syringe like the kind used to measure medicine, if the person is propped up a bit.
I wonder if it would be possible to have your gran moved to hospital-especially as she has a uti, or even to a different home, ( but I don't know if that would be possible at the moment) maybe to one that is more actively a nursing home, although I know those might all be difficult as well, if she might be not well enough to be moved.
I feel so sorry for your situation, I hope you can manage to see your gran, and I'm sorry you lost your mum when you were younger, too.
Your gran will know how much you love her though, and she would know you'd want to be with her,
I hope you're able to see your gran, and I hope you're as ok as you can be xx
