I also think it is important to describe her as smaller than a rottie since calling her a rottie mix sounds big. A taller, thinner beagle with rottie coloring? Whippets are a little smaller than Kiara with a similar shape the only problem is, and I know from experience, most people ask what's a whippet?

As mentioned by someone else I think it's a good idea to look in backyards and windows (from a distance of course!).

Kiara is a little smaller than Sadie but very close in size. Sadie is about 17in high and 36lbs. A picture next to an object of known size might be more helpful to non-dog owners for whom numbers don't mean much.

I wish I could walk the streets of your neighborhood calling for her rather than sitting here thinking of how to describe her. My thoughts are with you and I hope this nightmare ends soon.