I dont think she will enjoy if you lace it without her knowing. I dont know about you guys, but the few times I've eaten hash/weed I've been so baked, its unreal. My Uncle gave my grandad (who's 72) a potent space cookie and he ended up in hospital, not being able to breathe properly and feeling dizzy and sick - its not nice to force a drug upon someone ,especially as you dont know how they will react. She will end up thinking cannabis is worse than it is because she had frightening experience!