Well, dunno about you, but I get back into ketosis in ONE DAY, every single time.

I'd do legs first myself - the larger muscles burn off more blood sugar, and plus, that way the leggies get a harder workout with more reps, which is generally desirable for women.

And I'm definitely with you on the reps. I actually just suggested this to her in her gym log. Go shorter and heavier, especially for keto workouts.