Wtf?
Trusted friends gone bad?
You can't expect someone to devote all of their energy and attention to getting you weed, and then when they end up forgetting or having problems, act like they just ripped you off.
I waited around 2 months for something like this, This guy knew a guy who knew a guy who had dank weed. I gave him 100, and he took his nice time getting it. But he did get it.
I know it sucks to have someone waste your time, but realize that they're basically doing you a favor. Just because she couldn't get ahold of her dealer doesn't mean she's untrustworthy.