Is it possible that the mother phoned the regional office perhaps?
I had a referral recently that had as the last comment that she'd been offered a place at another unit, but after Easter. There was no indication of why she was then transferred to us. I didn't know the names of the people for the unit in question, and the last log action was done by a man.
I commented that I was going to try and find out the reason for the referral before I rang the mother (as I didn't feel in the loop, and didn't want to give her the run around). But my commissioner couldn't find out either.
So I emailed her to let her know how we stood, and suggested another local unit, and then I got an email from someone at our regional office who was the man responsible for the last log action. He'd noticed my comment.
So basically the mother had rung them. And she must have rung them back, because she didn't reply to my last email, and now she's gone from my join us list again!