"We can confirm from our investigation that there was never a camera in the lavatory" - And HOW can they confirm that AFTER the fact?

Source:  https://www.foxnews.com/travel/southwest-airlines-hidden-camera-bathroom-allegations-inappropriate-attempt-at-humor#

A flight attendant who is suing Southwest Airlines after allegedly finding pilots watching video footage of the plane's bathroom said that an airline official told her not to go public or "no one would ever fly our airline again."

(Renee Steinaker claims that she saw an iPad showing what appeared to be live footage of the plane's bathroom in the plane cockpit in 2017, and that one of the pilots told her it was "top secret security measure," according to court documents.)

Steinaker says that an unnamed airline official told her to keep quiet about it, telling her: "If this got out, if this went public, no one, I mean no one, would ever fly our airline again."

Southwest said that it investigated the plane and couldn't find any cameras. 
 "We can confirm from our investigation that there was never a camera in the lavatory," Southwest Airlines said in a statement.

UH - HOW can they confirm this?  AFTER the fact.  Because if you were one of those pilots and you saw that a flight attendant SAW you do this, I'm thinking THE FIRST THING THEY DID was remove the camera and delete the evidence.  By the time she could report it, get Southwest to take her seriously and FINALLY "look into it" I'm sure no camera was found.  DUH???

But then it gets better... here was the next thing they said about it... which really doesn't make any sense.  I'm not sure who they are taking about.  The pilots?  Because they surely not trying to say the flight attendant made this up to be... humorous?  Whaaaaat?

The airline also called the incident "an inappropriate attempt at humor, which the company did not condone."