Photo comes from the State Library online gallery on Flickr (via @dogpossum on Twitter): just look at the vitality and mischief of her!
According to the State Library’s page for the photo, they have been able to discover that Nellie Donegan played Henriette in A Parisian model (Broadway Theatre, Jan 1908) and that she was a former international speed skating champion. Apparently she was also at one time a “Zeigfield girl” (ugh, I hate that phrase).
The Google led me to a circus history site where I learnt that she grew up in a family that owned a skating rink in a small town in Indiana, that she was part of famous exhibition/vaudeville skating duo Reynolds and Donegan (the couple eventually married) and also that “Nellie gained some incidental fame as a steam calliope player between 1943 and 1945. She’s the only Ziegfeld girl to have played the calliope, as far as I know.”
If her birth dates are accurate (earliest reported as b1870, but there are discrepancies) then she was still skating into her 70s, just before her death in October 1945, which followed a disastrous Big Top fire for the Ringling Bros circus in Hartford, Connecticut in June of 1944. There seems to be a widespread belief that she died in this fire, which the dates make clear is not possible.
I wonder what she would have thought of the roller derby revival?