Companion Care Needed

I need a hands-on care provider for my mother in her 90s. She is mobile with a walker but falls are a concern. We're looking for some help preparing meals. Duties include providing companionship and social interaction, and checking in on her about 4 times during the day. Preferences for a caregiver who is a non-smoker and comfortable with pets. She has a cat. My brother usually stays there at night with her but has a weekend trip he would like to go on.