Now that I'm up to speed LOL. ...
FWIW, the photo they mentioned wasn't a print in her pocket or wallet, fwiw, so not something they would have found, or would be able to search for. Contextually, must have been a selfie of some sort of her at the party, sent to HF.
You're losing me man, and I'm trying really really hard. There's been no comment of it being a print or wallet pic. It was a picture found on HF's phone and what they used to determine the hand with a ring and 2 keys was likely Christina.