It was Baba the security guard that questioned why OP didn't press the panic button during his testimony. The security system OP testified about today he said he had it installed not long after her moved into the property. I think the way Baba referenced the panic button, it maybe one that all homes have installed by the estate as part of their security.
IMBW but I think Baba said that the panic button was an extra security measure that not everyone signed up for... probably cost a bit more.