This is an ugly one.
There are times when you are going to wish your mate will get it over with, already - and die.
You may put it into warm and fuzzy colours, like wishing the suffering would end, or wishing they could go home to Jesus...but the fact remains that a part of you is hoping for a death.
And you'll feel awful when those thoughts come up. You'll try to banish them, try to rationalize them away.
But the truth is that it's very likely that at some point on the dread passage, you'll wish the trip OVER.
Long goodbyes really suck.
For your mate, and for yourself.
You'll be tired of the road that leads to a door through which only one of you will pass. You'll reflect the strain of having a future while supporting someone who's got none.
You'll want to be released.
And that, dear heart...is all right. It's normal. It's how we cope, when the roads have to diverge.
It's what a hurting and very human being does.
But it's still not easy to process, not easy to live with that in your heart, so there are some things you may want to do.
First, try to keep a sense of perspective, looking at how rarely you actually have those thoughts. They loom large, but that's only the monster-shadow they cast. Journaling can help here...but be sure your journal is securely kept, for obvious reasons.
And it helps to have a shoulder to cry on. A counselor, pastor, or trusted friend can hold up an honest mirror that will bear a fair reflection.
Also, be sure to exercise self-care through involvement in activities that speak to you as an individual, and not as a caregiver. Even if you can only spare a few minutes a day, don't let this slide. You're important, as you.
One thing NOT to do is share the "I wish God would take you home" thought with your dying mate.
Aside from the fact that you can't fully know the 'state of faith' at that moment - he or she may be scared witless - that comment negates the good he or she is still trying to do in what life is left, with what strength remains.
Life is often the most precious to those about to lose it.
And your yearning for an ending, sometimes, reflects exactly that.
Your life is precious to you, because it's YOURS.
And it should be.