What about mounting the shotlock and then putting a fancy full-length stand alone mirror in front of it to hide it.
She gets a fancy mirror, and you keep your shotlock.
Fasten a 2x8 to the bottom of your bed & attach the shotlock to it.
No experience with SecureIT, but it is one I am looking at myself.
https://www.secureittactical.com/pro...safe-model-47/
I like those under bed drawer ones, those are sweet. Digital Pad, that'd be my choice.