Yes. It was her recurring back injury that made her decide.
Neither of those accomplishments is enough to secure her a spot in show skating.
Ant - same reaction here. Caryn Kadavy also didn't have a ton of eligible winnings but has had a long pro career. And there are a couple of Oly gold medal winning woman who had pro careers that were rather short, so the Oly gold isn't a free ticket, either.
Liashenko is not a Friend of Scott, and unlike in Cadavy's time, there is no pro competitive circuit that is televised, raising the skaters' stock for shows.
Maybe she will make shows in Ukraine and Russia. She could participate at some televized skating reality. These things are becoming popular in Europe. In Europe FS popularity is rising. 2006 was the first year, as far as I remember, that so many shows were televized in Italy. Of what I've read here, it seems that FS is declining in the USA. So, better Elena Liashenko stay in Europe and do shows here. I hope she'll have a successfull career.