Is it normal for a stroke survivor to not follow directions?

My 81 yr. old mother had a hemorrhagic stroke on the left side of her brain a year ago. She has since moved in to my home and has Parkinson-like symptoms. My husband and I are getting frustrated to say the least with some of the things that she is doing. For example, when she goes to the bathroom she repeatedly gets urine on the floor because she tends to pull her pants down way before she is at the toilet and then tries to back in with her butt in the air. Everyday I demonstrate to her what she should do but it never seems to sink in. Also, every night at the dinner table when she is done eating she insists on taking her napkin to "wipe up" her plate but instead gets it all over her hands, the table, etc. We repeatedly tell her not to do this, but the next night it is the same routine. As a result of the stroke and several seizures later, I am sure that she has some brain damage. What I do not understand is that she can remember some things and not others. She will ask a question and then repeat the same question within minutes of you answering her. Is this normal behavior for a stroke victim or is it that she just doesn't listen?