Alright, as for the martial arts; she isin't a KUNG FU MASTAR, but she knows a thing or two about non-Lorath skills.
As for the age... in Lorath terms, Heartbreak is at something around midlife, Lorath live a lot longer than Nepleslians. Anyway, as Gamer said, this is roleplay... if we're going to start putting restrictions on what people can roleplay as due to IRL restrictions, it'll turn into a fiasco.
"Dude, you can't RP a Neko, you're a dude, and you don't know any Japanese!"
"Hey, you can't RP a Freespacer, you're a neo-conservative."
"Man, I don't think you should be playing an Elysian, you're atheist."