Hi there Perique.
Sorry, I just noticed that your post is over a week old.
Sample size one here.
I did something very similar when I started lifting. I already had a daily running/ jogging routine so I was in good carido vascular condition, and like your GF, I wasn’t overweight.
I had never really done any resistance training, so I started with mostly BW exercises, which can be fairly challenging. Pushups and Chins in particular, are really challenging for most women. Wall sits, BW squats, lunges.
Then some DB moves like DB walking lunges and Single Leg DB DLs, Goblet Squats, DB shoulder variations, DB rows and pressing.
So, just one person’s opinion here but I see no issue with this as she gets started, learning the movement patterns, learning to activate the muscle she’s working, getting some Mind Muscle Connection (MMC) going.
After that, programming can be very similar to the men, depending on time and goals. I train mostly for aesthetics, and right now I’m focused more on Glutes and Delts, so I will often spend more time on body parts I want to bring up. I really like a 4-Way Body Part Split and I usually train 6 days per week, but I think she can do just fine training 3 days per week.
BTW, most of the women here are PLers, and I think only a few of us like to write our own programs that are more geared toward aesthetics. I assume that’s why you aren’t getting a lot of response here. We have several women who follow PLing programming, or are following established programs. I would recommend @jamie1888’s log for looking at experience with some female specific training that isn’t PLer focused.
@ Training with your GF. So fun. It’s nice to be able to train together, and help someone get started.
Best of luck to you!
Puff
Oh, I will leave this here since she wants to bring up Glutes, and to give her some inspiration and ideas. BTW, if she really wants to bring up her glutes, Bret Contreras has women training Glutes 2-3 times per week.