First of all, best wishes to your wife!
Maybe I’m in the minority, but I’ve got three Glock 27s. One I’ve had for 13 years and carry IWB for probably 250 days out of the year. I have shot many thousands of rounds out of this gun with only two malfunctions that I can remember, that happened within the first 500 rounds. i did have to replace one of the locking block pins recently as I found it was broken after a detailed dissassembly of the pistol, but I have no idea how long it was broken and it never affected the operation of the gun. The other two Glocks are newer and have only had a few hundred rounds put through each of them, but there have been no malfunctions yet. I’ve had a chance to handle the compact M&P and it felt quite nice in the hand, but i haven’t had a chance to shoot one yet and I’m not even sure I want to shoot one because then I’ll have to buy one and magazines etc., etc. 
I’m already pretty invested in the Glock system with magazines, and spare parts and don’t really see a practical need to switch over to the M&Ps at this point.