No matter what I do, my mom will almost always find something wrong with it

Let's acknowledge the fact that your mom has Alzheimer's and some who you know about her is not present sometimes. That's a part of the disease, we know. Let's also acknowledge that just because she has Alzheimer's doesn't mean that when that comes up for her a part of your brain does pauses or becomes something rubber so that what you experience during that time bounces off of you and doesn't get placed into your subcortical brain or deep limbic system. Your brain still takes in what is coming at you and that is tough. You are human and you have feelings and your feelings are present  and they matter! You are right, it isn't her fault, it's a part of the disease. I often work with my clients in session on the present feelings through Brain/Bodyspotting to help cope with these feelings. If you know someone who does it, I would do a couple of sessions to notice the guilt, when it first came up, where you feel it in your body, what it does or tells you, or where it goes. In order for us to feel better, we can't avoid the experience, we have to give space for it, for your brain to work itself out. Hopefully that helps!