All right, let me describe it then.
Girls capturing there is a scripted quest, almost like fights with monsters. Basically, you go to the forest (the futher you go, the better girls you can find, but it is deadly dangerous without good equipment) and start to look for girls. You could look for them manually, set a trap or two, maybe something else, I don't remember everything.
Now, when you find one, you can either attack her (during it either capture or kill, killing is easier but much less profitable) if you close enough, try to sneak up on her (equipment/skills required), try to use devices like hunting network, try to catch up with her if she is runnig away, etc, etc. Or you can catch someone in a trap with a certain probability (traps are not free and are disposable).
After successful capture you can rape her (that's how MC gains exp and levels there btw), kill, release, escort in the town and sell... There are less pleasant options, let's omit them. You know Huntsman, he just loves that guro stuff.
Oh, you also have to watch over your prisoner, so you are restricted in actions.
I'm not telling that we should copy it, but we could use some ideas.