Our current routine is:
Motor running, in neutral, clutch in, front brake on, jiffy stand up. Just before I give the OK for her to get on, I'll lean the bike slightly to the right. She boards from the left. As she gets on, I'll straighten the bike. Her initial weight on the left peg gives me good balance. While she's swinging her leg over I'm bringing the bike vertical. We've only done this a few times, so far it works GREAT. She will also tap my shoulder getting on, keep her hand on my shoulder for balance, and another tap when seated. It's much easier to do it this way than to describe it!
I do want to try the "on stand" method too.