Hands-on Care Needed For My Wife In Burnet

My wife is 90 yrs. Moderate dementia. 116 lbs. Frail. Chronic dizziness, Legally Blind. Needs help with mobility, dressing, feeding. No cooking needed but possible simple meals like sandwiches. Needs a comforting calming presence and needs to be monitored closely to make sure she does not try to walk on her own. Initially just need one day per week or available for special events when I need to be away. May increase to 3 days per week at some point. Wednesdays are preferred but flexible.