Seems like her paintings are priced pretty well online but I found one small piece sold on Ebay for a hunded or so. Mine is about 10" x 13" image size. Should I do auction style of buy now?
This is strictly personal opinion, but when it comes to original art work or anything unique, for which there is no way to see what an identical piece has gone for in the past, it seems to me an auction is the only way to be sure you haven't seriously undervalued it. History of similar things gives you an idea of where to set the minimum bid. So much of what an auction item fetches depends on who sees it. Which venue are you planning to use for the sale? In my years of cameo hunting, I have grabbed some serious BIN bargains because the seller was unfamiliar with cameos & I have seen auctions top out well beyond what the seller probably imagined. I have also paid more than I otherwise would have for things because they fit with my specific collecting interests.
