Well she played at the New York Philharmonic. It's not like she was playing at some town hall or something... I'd expect that most musicians at any major orchestra make at least 6 figures based solely on the prestige of the orchestra. After all, they wouldn't be there if they weren't good.
Like it's been said though, for every person like this woman... how many cellists are there with no job at all, or working some other job because there is no work for them. I'm betting its more than a few.