Zoee was about 5 months old when she went to the beginners class. We should have put her through again, but decided we'd do it "later". Yeah, well later never came. To this day we keep saying she needs more obedience classes. She is not out of control or anything, but she has horrible recall, usually that is only a problem right here in our own front yard. We live on a court so no worries of cars.
I would probably suggest to put Ginger through again, if you can.