From what I have heard. Hannah got some legal advice over Christmas and then without much notice suddenly released ownership. The Stockton and 'boro flats had gone already. The new owners seem to be completely changing things - new site, changing some of the numbers, although represent the same girls. I'm not sure if the are using flats and having these girls on different days in the same flat. If they are the police may be interested.
Overall it makes sense to me that Hannah got wind of police being interested and left before too late.