Glad Edwina is calming down now....
We get this reaction too with the Tribe...the night managers (Percy and Norbert) patrol the windows after lights out and if the Orange Tabby from 4 doors down or Phyllis and Neo from next door come by for a visit, they do the "meezer howl" and the "get the heck away from our house" growl. Both sounds can get us flying out of bed in 3 seconds!
Well, everybody gets big bushy tail and go into Orange Alert status - then Pippin ( who can't see who he's running into) runs into someone and a spat ensues.
I usually grab the Feliway and sprtiz around everyone so that we all go back into our happy Zen places and we can get back to bed. But it just takes one cat howling to get everyone on edge.
Hope Eddie can get back in Edwina's good graces... :p