to be honest mate , theres every chance they got spiked
i mean two lasses in a boozer are perfect prey , as harsh as that sounds,
if it was me if give her the benafit of the doubt, you steamroller her with dont do this ect shes going to loose the trust between her and you and her mother, at the mement shes willing to speak to you on the subject ,
also that other way to look at this is , if she did drop something and dosent want to admit to it , then the scare of being freaked out and carted off to hospital may of done the ideal thing and completley put her off drugs,
but just to give you food for thought re spiking mate ,
im 6ft 23 st and not a small lad, went to a nightclub in basildon essex few years back with a bouncer mate , having a cracking eve, bumped into a lad , spilt his pint apologised and bought him another , put me drink down for a minuite ( honestly a minuite with em back to it )
40 min later my friend found me collapsed in the blokes lavvys , he cleaned the door off its hinges to get me out , i was just able to walk past the bouncers , got sped bk home half hour drive in ten min
i was absolutely flaked , couldnt do a thing , and slept for about 18 hrs ,
these things happen mate , lets hope the scare has made her see sence ,
hope my input helps,
beef