If the woman was serious about lifting, and she knew how to properly spot.... It would be great.
It is HARD enough to get a training partner who doesn't dissappear after 3 months....
After all, She is SPOTTING you on the lift, NOT DOING UPRIGHT ROWS.....
I hate that. Use a weight you can get 6 good reps with, and possibly need a little "assistance" on the last rep.