Your daughter has complained about the sound and not visuals. Frankly, you can shoot just fine on an iPhone and I saw a full cinematic feature phone shot on an iPhone so I'm with Tim on this and think sound issues should be dealt with. In terms of sound, the closer you get to a quality microphone, the better the sound gets. You mentioned 'around town' so there is an implication here of outdoors. However, I think there are several different 'simple' sound options but need to better understand the details around how she would use this as well as budget. Specifically:
What type of sound does she want to capture? Is this dialogue or just grunts / yells etc...?
Is recording outdoors or indoors?
Does she have a friend who can hold sound equipment?
What is your budget? Film making can be an extraordinarily expensive hobby and I have no idea if you are thinking $200 or $20,000 USD.
What software is she currently using to edit the films together?
For the soundies on here, I am thinking ADR, foley, outdoor vs indoor shooting, sound software, lavs vs boom etc...
"80% of success is turning up" - Woody Allen