I think you have the right idea about that woman. You're probably best off without her, to be honest. I just don't believe that she disappeared with your vacuum cleaner! But this type of person never goes for good. I can bet my bottom dollar that she'll be back trying to worm her way back into your life.
This has happened to me before and thankfully the friend wasn't that close to me do it wasn't too tough for me to cut him loose, but it did annoy me that some people could be capable of such horrid behavior that is disrespectful to other people's territory and property. After a while, I saw that the relationship was a bit one sided so I decided to cut off ties and I know the person still is bitter about my decision but it was the right one for me and now I feel more comfortable.
If that woman has kids, then I wonder what values those kids will pick up from her. They all might grow up as freeloaders like her. I bet she will send or has sent them all to public schools.