Okay, thank you so much. I didn´t know that this obligation of giving something similar still happened in EUA (to be honest, I´ve seen it only in romans about ancient ages (a noble from feudal Japan offering a precious gift to his guest in order to force the guest to give him his concubine, for example). Or fantasy, like The Hunger Games (Katniss resenting Peeta for owing him the breads and so many other stuff, etc)
This "unproper for a lady" thing was common in many lands of Europe, and also in Brasil, according to many books I read. In an old roman, a man said that "a gift for the body", like a jewel, was not acceptable from a friend, but a gift for entertaining, like a pair of opera glasses, was perfectly fit. (even today, if a Brazilian woman gaints expensive stuff from a man who´s not her husband, people call her "bitch" and worse things, instead of taking care of their own lives. Ugh)
In that episode where Vulcano buys that robot factory to kill Ben, Gwen resented for not having a car like Ben and Kevin, and many fans became confused. "Why not/" "Why can´t Kevin give her a car? He´s that cheap?" etc. For me, the logical thing is that Gwen´s parents wouldn´t allow this - and Kevin wouldn´t risk to angry them and be forbidden of seeing Gwen. Frank and Natalie are very conservative, Dwayne McDuffie told me that.