The Sig P238/938 are nice guns as well, but I did not care for the ambi-safety. With smaller hands it would probably be less of an issue, but I like to have a firm grip when disengaging the safety. With them it was hard for me, as the safety hung up on the right side because of my grip. It's another popular choice, but I would have her try to disengage it multiple times to see if she has similar issues.
I'm sure it would work great for me if the gun was geared towards a righty. As a positive, even in 9mm it was a soft shooter.
My wife ended up going with a Glock 42 earlier this year. She is lacking in the strength department, but has no issues chambering a round. The Glock 43 was just getting released, but the 42 fit her hand better anyway so we went with that. I thought she would prefer a gun with a longer DA pull, but it was the complete opposite. To this day Glocks are the only gun she likes to shoot from our safe.