Caring or not caring about how much I care about being a carer

Ah the joys of being a carer. Since the untimely death of my brother in January (I cannot believe just how much I miss him) I am to all intents and purposes a carer for my 80+ year old mother.
 This consists of sorting out her medication, both morning and evening. Likewise with her meals, and generally just being there in case she needs some assistance throughout the day. It is, I must stress, an extremely taxing job.  There is nothing specific I can put my finger on and say, "This is extremely difficult and I would prefer not to have to do it." The truth is that the whole thing sort of wears one down in a kind of cumulative way.
 I don't begrudge being her carer. After all, somebody has to do it, so I suppose it might as well be me as anyone. The problem is that I'm parted from my Jenny. This is absolute torment. I find every day that we are apart sheer purgatory ! Jenny is exactly the same. Worst of all, to complicate matters, my mother has decided that she has some issue with Jenny, and we cannot figure out exactly what her problem is. Subsequently, Jenny is reluctant to stay here with me. This means that I get to see even less of her then I used to. It is literally driving me crazy ! Why do the elderly become so awkward ?
 Things can't continue as they are. Jenny is my partner and we are used to being together 100% of the time. To suddenly split us up and try and tell us that we cannot spend time together when we want to is absolute torture ! I can't continue to function without the support and presence of my Jenny. She is a pain in the butt. She drives me nuts, and I often rue the day I met her, but not for long because she is MY Jenny and she has been by my side now for so long that I can't imagine being without her.
 Thus, the long and the short of it is this: my mother will have to learn to accept my Jenny as being a part of me. Otherwise this is just not going to work out for much longer. I need her. Without Jenny I am a nervous wreck. I am unable to function properly. I never knew that I could love somebody to such a degree. But I do and in doing so I've come to realize that she is as much a part of me as my right arm. I have to have her with me. And by hook or by crook she will be with me !