After reading your criteria the first that come to my mind is the Walther PPQ.
There is no safety on it, but why does she want a safety on a pistol she is going to use with an empty chamber?
The pistol is easy to rack adaptable for small hands, very nice trigger and very good sights.
Otherwise the HK USP with a lighter recoil spring.
Compact and easy to rack?
Easy to rack and low recoil?