Random Abstract Enquiry

About 6 weeks ago a friend of mine had her drink spiked in the club where she DJ's. We don't know what she was spiked with but she got really hyper without drinking much and then virtually passed out and was virtually unconcious for a while before her boyfriend was called and she was taken home.

She seemed pretty fine since but a couple of weeks later had suddenly split up with her long-time boyfriend who she completly adored and has been acting kinda wierd ever since. She's started sleeping with another guy, drinking all the time and seems to be in a complete mess. She says she doesnt know who she is anymore and that in the last few weeks all the things she wants from life have changed.

It's probably really unlikely but could this all be in some way related to the spiking? She says she's not doing drugs now and bar smoking weed occasionally she hasn't really in the past. I didn't think there were any really long-term side effects to getting spiked but I thought I'd ask - incase the is any chance the two could be related.