Is there a way to prove I didn't make a FaceTime audio call?

Recently my "soon to be ex wife" claimed I tried to contact her with a FT Audio call.. I absolutely did not make the call. It is not in my FT or regular log of calls. I was in a work meeting at the time. She is using this to say I made unwanted communication with her. My sense is she changed someone else's contact name to appear to be mine on her device, had the person call so it would show up in the log. It appears that the number will still show which real number the call came from. Is there anyway from my device to prove that I did not make this FT Audio call?

[Re-Titled by Moderator]