I don't remember that much Jen, but I know we didn't use the alarm-thing for very long, because my parents didn't like it either.
I think it was supposed to wake you up so that you could stop and go to the bathroom, but I think that was too difficult for me. When the alarm woke me up it was already too late.
I'm not sure if they tried any medication. I don't think so - I think it just got better as I got older!
I hope things will get better for your friend! How old is her son?