My 86-year old mom had a minor heart attack and a "Broken Heart Syndrome" heart incident prompting 2 angiograms within a week both normal. Her dementia became a lot worse since then, but has been declining all year. The broken heart attack came after her doctors said she could no longer live alone. My mom had two hospital stays, a week in rehab, then moved into a memory care center. We know these changes could have made her dementia worse. Could her dementia level go back to about what it was before all of this happened?