Could it be because of my small hands I can reach a maximum of one octave only
What was her name, hfm, if I may ask? She sounds like the lady who taught me organ, half a century ago. Probably the most influential person, other than my parents, in my entire life!
Claire Allen, graduate of New England Conservatory. She was old enough to have played Gilbert and Sullivan Shows live, if that's any clue. That was her married name, I never knew her maiden name. I would say she was 70ish in the 1980's She played organ and directed choir for the church but I don't know if she taught organ.
Oh well... different lady, about the same age -- mine was a lady named Enid Woodward (and I do mean lady, in every respect).
I've seen the small hand theory introduced by members many times here.