The real question is whether she's old enough to be dated by an archaeologist! Without in-strata objects of rich organic material or other items incorporating atmospheric carbon-14 at the time of interment, accurate carbon dating of exposed remains becomes tricky. If she died sometime after the mid-20th century then bomb pulse dating may be possible, assuming her fictional-world-within-a-fictional-world had atmospheric nuclear testing going on like ours did. We can probably get some information from amino acid racemization rates with some generous assumptions about the general temperatures of her surroundings.Or we could just ask.