Companion Care Needed

I'm looking for hands-on care for my mother in her 80s. She has mild cognitive disorder. She is able to stand by herself and use a walker but needs help with cueing and toileting during the night. She will be coming home from rehab on June 5. Prior to this last hospitalization, my sister and I have been handling evenings. We are looking for someone to take some of the pressure off of us. We are looking 7 p.m. - 7 a.m. but are willing to be flexible. We also don't need someone 7 days a week, just open to someone working 3 - 4 days a week. She also has a small dog that needs to be let out.