I apologize if this has been pointed out already, I'm not totally caught up on this thread, but all she had to do was go the S&M route and "gag" a man (hence the "I've got tricks you've never seen" quote), and that gag has been saturated with chloroform beforehand...poof...the guy's out and she makes a beeline for his wallet. Let us not forget that she stole $480 (I'm pretty sure that was the amount) from Amy and claimed she had put it somewhere while sleepwalking. So we know she stole money from someone while they were out of it!
Some people use chloroform for an S&M thing, others use it for a heightened sexual experience - nothing to do with "the choking game." But, of course, if you inhale too much, you may have a seizure or you may die.