I've combed through Laura's books and I can find no mention of this woman.
This is from the Pittsburgh Post-Gazette, May 23, 1944
Shirley Herman Held Over at the Trelon
Shirley Herman, comedienne, has been held over for a second week at the East Liberty Trelon as the headline attraction in the floor show. Miss Sherman, known to radio fans as "Mrs. Schlepperman" was formerly featured on Jack Benny's program, and she shares honors at the Trelons with the Seldens, comedy juggling team.
I've found her listed on a show on an obscure NYC station in the early '30s as a singer, and then on "Professional Parade" on the NBC Blue network in the mid '30s but not much else.
Yhtapmys