A good Neuro would be able to tell you more specifically about your mother's condition. As my DD is in Keppra, and has previously been on other seizure meds, the Keppra, by far has had the least amount of side-effects. You could ask if some of her mood changes, memory loss, etc. are from the stroke vs. the Keppra. Please do not wean her off the medication without a Dr's directive... that could cause withdrawal seizures.
My thoughts are with you that your mother gets well soon.
my father have the same condition, the doctor just prescribe him Kepprra and i'm worried about that cause he had a brain stroke and never suffered from seizures. so i wanna now how its going with your mother, and if u can contact me to know more i'd really appreciate it.