This is a must watch... The cat was never in any real danger as long as he(she) stayed where they were at... Tucked in side of the wing structure.. The cat could not have been blown off the wing....
For those not familiar with Aviation there are flags on planes to "Remove Before Flight" that would be fur such items as Control Locks, Pitot Tube Covers, Gear Pins, and other such items...
For those not familiar with aviation
As the picture above clearly shows a darkened area directly below said cat, that should have been investigated as that is clearly an anomaly in the wing skin.