My Mom lives alone, and I'm looking for someone to come in once a week, every other week to help with house chores

I recommend contacting your local ADRC. Mine had a program that would send a house cleaner for free every other week.

We were referred to a housekeeper by trusted neighbors - along with cleaning she would keep mom company once a week and make her lunch - she continues to visit mom once a week for dinner in her memory care facility

You can hire help from an agency or use an individual from. The advantage of an agency is that they are bonded. Plus, if a worker isn’t available for a shift they can send a replacement.

There are plenty of agencies that will send someone over for that. Have you tried calling ones that are in your area?