People are saying it was stupid to declare a "security emergency", but really, was it?
The captain may have just been told that "Theres a nutter running around with vaseline and a screwdriver" (s)he may not have been told it was a little old lady that might be just a bit claustrophobic. And given the events last week I can't disagree with the decision the captain made.
It may be nothing (probably is) old lady and vaseline kinda go together nothing to worry about, the screwdriver though, a bit harder to place.