Working on it, one thing I forgot to ask. Does your wife work in one school or in several? Does she work with boys or with girls? All this makes a difference. Not all teachers are cooperative when it comes to services especially for boys. If she goes to more than one destination that means travel (which she does not get paid for) looking for parking (which is not always close to the client) and shlepping her bag of tricks to the appointment. And here is the kicker, they don’t usually call to cancel so you waste your time. What you might consider picky and choosy, she might consider being careful or having been carefully warned about the client.
All these are possibilities that need to be considered.