There are 2 ways to create feminized seeds, First is to use hormones on a pure female plant to cause it too hermie and the second is to stress a pure female (with lighting) into hermie... Of the two the second option is much more difficult but is preferable because the seeds aren't exposed to unnatural hormones that could have many other side effects on growth and production.
In regards as to what to do with your hermie, growers who don't have many plants sometimes clip the balls and flower the plant. You have to be attentive though because the balls will grow back. The bud won't be as good as a clean lady it will still be useable.