The first answer on a phone call will always sound reasonable. The useful part is what happens at 3am, after a fall, when nobody from the family is in the house. Ask every line the same questions in the same order, and write the answers in one place so you can line them up.
Local option: New Plan Care gives families in the St. Louis area in-home help so a parent can stay home: companionship, help with bathing and dressing, meals, and overnight care. Call (314) 405-0887.
Questions about the night
Ask who answers the phone after hours, and whether that is the same person who would come to the house. Ask how the response works from the moment you call: who is contacted, who decides, and whether they will put the typical response in writing. Ask what the first step is after a fall, whether it is a call to 911, a call to you, or a visit from their staff, and what they do if she cannot get up off the floor.
Ask whether a person is sent to lift her or only to check on her. Those are different services, and some lines offer only one of them.
Questions about what they will not do
Ask exactly what the helper will and will not do with medicine. A non-medical helper may remind her to take a dose and may pick up a prescription as an errand. Handing out, sorting, or managing her medicine stays with the family, her doctor, and her pharmacist. If a line says a helper will do more than that, ask them to explain in writing which part they mean, and check it with her doctor and pharmacist before you sign.
Compare the answers, not the voice
Lay the answers side by side. The line that gives a clear answer on the fall, the lift, the phone, and the medicine limit is worth more than one that sounds warmer on the first call. Mark each answer as given, unclear, or missing. A missing answer is a question to ask again, not a detail to skip.
The list of local services is on Local help after a fall, St. Louis. Start there, and call only the lines that fit the house and the nights you described.