If you can avoid them, stay away from any "monopod" system, my experience is that it is unstable with lateral movement and such.
I just got the Primo's Trigger Stick in the "tri-pod" model, it is a bit heavy but if your gonna be with her you can carry it, but then it's down to how much YOU want to carry. It can also hold a pair of bino's steady for ya as well.
I do know of a shooting stick system that hangs from your belt and your basically shooting free hand with a stable platform, these also fold into a 6-8" triangle to give you a "lying down" bipod. I recommend them as well, but the name escapes me, and I'm in afghanistan so I can't go into the garage and get them, nor can I explain over the phone to her where it's at without her stumbling into my "hunting stash"
Good luck to ya, there's lots to choose from, buy em all, shoot em all and make your choice!!