Kasper is concerned to hear the approaching tac team call out to "Don't let M-Com take them! We don't know how much they know." The idea that they're aware of who M-Com is speaks volumes to him.
The young man, the one who had been watching, opens a portal allowing Daley to come into the scene to join them. Kasper calls for her side-arm and she willingly removes her pistol before tossing it to him and starting to work at her finger tappings to focus her psychic powers on locking down some of the now coming bad guys. Unfortunately, as her powers flare, they react badly with the mirror magic and suddenly a sort of weird colorless non-existence starts crawling out from the mirror to gather them all in.