Please help us find Roxy -- October 16 update

NOTE: Roxy has been found! See below.

Our cat Roxy has been missing since yesterday around noon. I was trying to get her into a cat carrier to take her to a vet appointment, and she slipped away from her collar and bolted out an open window. She is an indoor-only cat who has never been outside for any extended period, and she is very timid and shy of strangers. We hope she is hiding somewhere near home, but have not seen any sign of her since she escaped. She has a collar and tags, but is not currently wearing them; however, she is microchipped. Roxy knows her name, but is probably too afraid to come when called right now.

Here's the rest of the info:

Name: Roxy
Breed: Domestic shorthair (probable mix)
Age: 1 1/2
Color/Markings: Black and light reddish-brown tortoiseshell with "split-face" markings (see photo below), yellow-green eyes
Sex: Female (spayed)
Weight: about 11 pounds
Microchip number: [REDACTED]
Last seen: 12 October 2015, 12:15 p.m., South Redmond, WA neighborhood near the Meadows subdivision

This is our most recent photo of Roxy.

If you have found or seen Roxy, please call [REDACTED] and reference her microchip number. Also, if you happen to live in our neighborhood, please pass this post on to as many people as possible and share on social media (Facebook shares would be especially helpful, as I'm not on there any more). We have contacted Animal Control, have done several perimeter checks on the property, will be blanketing our neighborhood with posters and picking up a humane trap from the shelter where we adopted her, but anything you can do to spread the word to someone who might have seen her would be so appreciated. We are heartsick over losing her.

Thank you.

ETA (10/16/15): Captain Midnight checked the humane trap this morning, and what to our wondering eyes should appear?

YES! Piteously meowing Roxy-cat, who had been lured in there by the siren call of sardines!

Thanks so much to everyone who helped us get this wandering kitty home again. We are so very grateful to have her back safe and apparently unharmed (aside from double the amount of typical skittishness, which should calm down over time).

I love a good happy ending, don't you?

P.S. Roxy is very affectionate on her own terms. She doesn't much like to sit in laps...

...but she still manages to get close to her people. Here she's taking up about half of Captain Midnight's computer chair.