I think you could just pollinate a branch of your female, so you'll get a bunch of seeds and a litlle bud also. Just don't pollinate the main cola (yeah,that's pretty obvious ) !!

I did it in my previous outdoor grow by collecting some pollen in a bag, putting a branch of my female plant in, SEALING the bag and shaking the branch. you just need to be aware that there's no air flowin inside your grow room or you're gonna fuck up everything.

You'll come up with a single branch (you decide which one is most suitable) of your female plant full of seeds and all the rest is nice sinsemilla for ya