I do have a Herta Uhlfelder in my file, born December 12 1924 in Heidingsfeld, Lower Franconia Germany. Inga's age seems to fit with Herta's birth date.I have her ancestry but nothing coming forward from her birth.
Please let let know any other little bit of information you may have. Have you checked the Riga files for any pieces of information?
I will send you everything I have on her family after I hear from firstname.lastname@example.org