Girlfriend needs a good routine

My girlfriend is one of those skinny wimpy girls. She has been going to the gym with me on and off for about 2 years now. I have not noticed much of a change in her muscle definition in that time. She always seems to finish way quicker than me, like today I trained chest and she did chest and legs and she was done 10 minutes before me and I only trained for an hour. What type of training split do you hardbody girls do and what advice could I give her to help put on some muscle and tone up, thanks.

Beefcake:

I've only been seriously lifting for about 8 months but this is the routine I started out with. It's easy but brings quick results to woman just starting out.

Bench or incline press
Lat pulldown
Lateral raise
Seated Dumbbell press
Barbell curl
Barbell triceps ext.
Leg press
Leg ext.
Leg curl
crunches

I used this workout 3x/week with aerobics on the other three days for about 1 month. I worked my legs more because they're my strong point and I also needed the encouragement from something I was good at.