What I have on Dora Megger is she was born 5 Feb 1883 and died 13 Jan 1953. It's most likely Theodore's mother is the Dora that's the daughter of Joe Kelpinski and Katherine Kusmierz. My interest is in Katherine who was my grandfather Joseph Kusmierz's sister.
I don't haven't collected any information on Dora's children. You would have to check Theodore's birth certificate to know for sure.