Agreed. My wife is 5'3" and 125lbs, she shoots a 45-70, a 300WSM, 7mmRM, and 338WM - also a 12ga 3 1/2 for turkeys, if shotguns count. Not excessively heavy rifles, just good fitting stocks, good pads, and good brakes. Loud as he11 shooting next to her, but I'll take it.

For what it's worth, none of your list is a mountain rifle, none are a "light rifle for a woman," and none are really in great long range elk rounds. I'd also note that you have the SCAR as "solid all around," then discount the AR-10 because it's "heavy". DPMS Oracle 308 is almost identical empty weight as a SCAR.

Bottom line, you want a SCAR, buy yourself a SCAR. No need to pretend that you're buying it for your wife.