Many home health care companies offer "companion services" in which a person visits the elderly person's home on a regular basis to check in, spend some social time and help out around the house. To find an agency in your area, you can use our Senior Home Care Provider Finder: https://www.agingcare.com/Find-Senior-Care/
Can you provide more details as to what you are looking for? Do you want someone for her to run errands with, light house cleaning, reading partner? Do you want someone to speand all day or just a few hours weekly? Home Health Care can provide that, my company provides that for several families in many different ways. As suggested by the Aging Care Editor, follow the link and locate one in your area. Be sure to interview them, make sure they are insured, check to make sure they have a clean record with the State Board of Health and are Licensed with the State, compare pricing, the cheapest and or most expensive is not always the best. Good Luck.
https://www.agingcare.com/Find-Senior-Care/
Blessings, Bridget