That's right, it would be wrong to infer that a girl getting lots of expensive gifts is hooking.
I should have mentioned that these friends of my gf said they were doing it.
My gf thinks that that high school girls selling sex is less common now a days but that before "sooo many girls did it!" ... she's not from the best part of Osaka
But anyways, it wasn't thought of as being as much of a big deal here as a westerner might make it out to be.