What Causes Impaired Speech And Balance Disorder?

my roommate is repeatedly falling and has impaired vestibular/balance problems with impaired speech from time to time Her mother died from Alzheimer s Dx and she is currently disabled from diverticulitis, IBS, musculotskeletal problems ( cervical mostly) Today I returned home from shopping and she was on the floor, cross-legged, bend over and when I called her name and asked if she was ok, shewas unresponsive for several minutes. When she did respond, she claimed she did not know how she wound up on the floor in the first place