Depend on how you see it but I would think it is disrespectful. Then again, I am a timid person who would not even swat a fly. If you are like me, conisder it a cross that we have to face everyday, and if so, embrace it. Love her, be kind to her, maybe that will make her quiet, who knows.
Some people consider candidness as the right thing to do, and they do it, but very often it does not bear good result and good relationship among the parishioners.
I don’t know. A 94-year old. Hmm.You church is blessed to have such people who would still want to go to mass. If anyone want her to quiet down, probably it’s good to find a suitable / subtle way to do it, otherwise bear with it.