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(((They))) are trying to shut down the reason for her suicide. It is said the laser has a slight chance (1,5% likelihood) to activate the path from the optic nerve to the pineal gland. It allows the person to see the monsters that are around all the time. They can't take it and opt out. Keep in mind those "monsters" are interdimensional which operate on different wavelengths (similar to infrared), thus can't be seen with a normal untreated human eye.