in general, yes higher reps lighter weight works on endurance, but too many ladies seem pre-occupied with that rep range. its very importants, especially was we get older to work the heavier weights and few reps (like 10-12 reps). this WILL NOT bulk you up, but will work on some muscle mass. there are different types of muscle fibers and each one needs to get a chance to do some work. this has helped with injury prevention in the long term.
i have heard from women that they feel they bulk up, from what i have seen, most of the time it has to do with eating. ie, they aren't exactly bulking muscle, but fat. or alternatively building muscle before the fat comes off, but the fat WILL come off. you can't control how your body responds.
smile
Han