Replying to Core Helmet Recommendations

My girlfriend brought up the fact that my pad-less Bern helmet that I wear over my goggles with whatever beanie I have handy probably wont protect my head the way it was intended to. I told her it makes me steezier and better at park stunts, but since Palisades Tahoe Alpine Meadows has NO PARK and Palisades Tahoe Olympic Valley only has a children park, I thought I may want upgrade the domepiece protector.

So NS, how do I stay core and get a new helmet?