IF she has mags issued from stock AFTER Aug 04, she should be "OK", At that time, Rock Island Arsenal (As opposed to Rock Island Arms) & TAACOM had the M9 mag "frozen" in the system. Each mag was stripped, and that weak-ass POS spring was replaced with a chrome-silicon type spring. 95% of the problem was solved, IF you're using new issue mags.
Here's the deal-
Don't get a bunch of mags and send 'em off simply because they are factory.
If I were deploying today, I would still replace all of my mags with Wolfe +10% Power springs, and treat the interior of the mag bodies with Blue Wonder Armadillo.
IM me, I'll send you some Blue Wonder Armadillo.