Lag between picture and sound on reflection - evidence for court of gun being fired

I set up a ring door bell and captured my wife walk around the corner and allegedly fire a gun four times. The proof is the muzzle blasts that you see as a reflection in the glass of the oven. However, there is a lag between the sound and the reflection and the reflection even "hangs" on the last blast. Does anyone know if there is a lag between sound and picture and what the frame rate of the ring camera is and would that slow down due it being a reflection? Thank you in advance.