Mum goes to the intercom but presses the red emergency button instead of the "speak" or "enter" buttons.
Not getting the response she wants, Mum decides to walk down the long corridor to the front door in order to let her visitor in. It takes her about 5 minutes to get there.
Meantime, someone from "Careline" is calling out through the intercom system in Mum's flat, asking if she's okay.
As they get no response, they call an ambulance.
A typical chaotic morning for all those around Mum. Three hours later she has no memory of it at all.