Ya THINK!
Mentally ill people didn't necessarily partake in recreational drugs. Usually you can't make them take them at all so they wander around wearing...well, floppy hats and talking to themselves.
In other words, she may not be a hippie so much as an individual who is ill or sick and on the street as the result of the wonderful efforts (/sarc) of JFK who felt these people needed to be mainstreamed and now we get to see them up close and personal as they flip out and/or die on the streets rather than institutionalizing them so they could live with some dignity.