As a fellow sufferer of migraines, alcohol has always been a trigger for me, especially wine. I'm wondering why you would reach for alcohol, especially while suffering from a worse-than-usual migraine. A tip... try pain medication, even otc, add caffeine plus sinus or allergy medication.

As for the plane trip, I would've said it was a hallucination, except for the physical evidence. Sorry, but I'd put this one down to a supernatural event. I'm sorry this happened to you. Just to be safe though, don't mix any more prescription medication with alcohol. You never know what could happen.

I have a really strange feeling that your mom's accomplice is a cop... maybe even at the same police station, you're planning to go to. Maybe calling the FBI would be a better idea. Get as far away from your mom as possible in the meantime. I'd say at least 3 towns or cities away. If the accomplice is a cop, and they find your grandma, all they'd have to do is bang on the door & yell "Police! Open up!" I have a feeling your grandma would open the door, regardless of your instructions to her.