Suicidal Protester in Tara

This girl (Squeak) has entombed herself in a tunnel, in protest against the proposed road through the hill of Tara in County Meath, she says she'll disengage the car jack holding up the roof if anyone tries to remove her forcibly.
Looking at it she may not have to, it looks quite precarious!

This is a short clip (32 seconds) from RTE's Prime Time, showing her predicament;