Howdy! I just sold my Stella because it was too tall for me. I'm 5'2", but that isn't important in this conversation. Height isn't what matters -- inseam measurement is the issue here. I have a 25" inseam, and I just couldn't get the stock Stella to work for me.
Another factor is the width of your thighs. I'm a very fat person and I carry a lot of my weight in my thighs, so that adds inches to the height when sitting down. (I realize many folks aren't comfortable addressing these kinds of things at all, much less with a bunch of strangers on the internet, but please know that the thickness of your thighs is indeed relevant. No need to share your body type with the class, but just keep it in mind when shopping.

)
Now, I could have
gotten shocks with
less play than the stock shocks and/or
the low-profile seat from Scooterworks, but there was no guarantee the Stella would be low enough for me after the mods without doing them. As I was considering what to do, I found one of my dream scooters and traded in the Stella.
Please note that my case is extreme. Most petite riders have an inseam of 27", two more than I posses. Also remember this has nothing to do with being a woman...the average American woman is shorter than the average American man, but she has longer legs that him (on average).
I hope this helps. Good luck with your search!