...seems to have retired or otherwise gone off the radar.

Her site is redirecting to http://tgirl-network.com/ which doesn't seem to have anything of hers.
Her Twitter account doesn't have a real update in weeks.

Anyone know what the deal is?

She has retired from performing as an adult actress, unfortunately.

I saw her in NYC about a year ago, fun time.  Thought I saw her posting in the last couple months