@Joehille,
I'm photographer and can tell you some of the technical details, however not the historic specifics you're asking.
I did some research and notice that in one of the pictures I can tell the type and model of camera she the used (at least in her later years) but not specifically or exactly the type of film.
FYI, I own the same medium-format camera Rolleiflex TLR (Twin Lens Reflex). She would've used a specific type of roll film camera in later post-WWII - say after '49, For example, mine is a similar model dates to 1963...hers in that image was probably post-1950).
The color film choices available for it were only a few for this timeframe. The color fidelity is high..so that'd rule out conversion from slide film of the day.