They have other tests available to cover just about everything except "Shrooms". She doesn't get to see the box & doesn't know what she's being tested for. I catch her in the morning when she comes upstairs to use the bathroom, then there's no way she can beat the test. Not that I'd know how to beat a drug test.
She has "Panic & Anxiety Disorders", so I don't think heavy hallucinogens or even stimulants would be real enjoyable for her, not that I'd know anything about that stuff.