And the 2hb thing is going to "feel" bad to her. The slow animation really pains some folks.
Once you guys hit 30 and are at a nice broken camp...do a half hour with the 1 handers and a half hour with the 2 hander. Try to get a feel for how much damage shes taking. It should be pretty obvious the 2 hander is the way to go, and that will only get better when you have the IFS at 40 delay (and a much better ratio). People tend to focus on the negative side of the equation. There will be periods where her damage will dry up with a lot of missed swings...just convince her to look at those massive ripostes and how you're able to keep her going with far fewer direct heals.
In the end, if she is happier playing using 1 handers...it'll still be fine. I'm just a min/max nerd.
Focus on getting her those SCHW first, 22% worn haste is going to be the biggest upgrade possible right now. Try to stick to XP that also yields good money. Sure, you'll level slower, but having gear upgrades sooner is going to keep things far more rewarding for her. Women love buying things!
Oh one other thing: definitely plan to do / camp the pieces for the first monk robe:
https://wiki.project1999.com/Robe_of_the_Lost_Circle
Raster is a classic-AF camp that you can get some good XP at. Targin should be XP-able as well. The sash and headband quests are simple, albeit long, but are a nice break from just grinding away...and she'll have some classic monk gear! (Just make sure she doesn't botch her turn-ins, thats the biggest EQ bummer possible.)