Disappearing Act

I went into the rabbit room this morning and there was Tosh and there was Shaz- but Shally had disappeared.  We looked everywhere- moved furniture- extended the search to the rest of the house- and finally found her up the chimney. The chimney closes with an iron flap- so she will have had to push this back and climb up over it, before dropping into the space behind. I'd love to have seen her do it.