Depends....if it's new and has the third generation magazine, magazine ramp, and recoil spring. I got mine when they came out. Lots of headaches with FTF and stovepiping.
I would suggest Hornady Critical Defense Ammo as it is somewhat more pointed than other defense rounds. The wide stuff did not feed well. Remember it was designed for ball ammo. originally as the Colt Mustang.
I actually sent mine back to Sig for for the reasons above..
I have truly thought about selling it as I just don't 100% trust it. Sorry to be the bearer of not so great news. The other thing is how is your Mom going to carry it. Chambered wise...cocked and locked, or non-chambered?