Welcome (from a fellow newbie)!
I get the whole Xanax blackout thing, and agree it could've happened.
But the ship has sailed for me on the whole "I made a dreadful mistake and panicked" defense.
Blackout? Normal, given the supposing pills and alcohol.
Potential dumb mistake/accident involving Caylee as a result? Very possible under the scenario.
But a NORMAL parent would've been horrified at their actions, remorseful, beating themselves up (and not just saying they did in that God-awful monotone script readin' Academy Award voice in her transcripts), begging for forgiveness, and trying their best trying to figure out what happened that night.
I, for one, would've gone to every one of my friends and demanded to know what they saw me say, do, etc. so I could figure out what I'd done. I would've been telling everyone I'd been around, "Look, you've gotta help me figure out what the heck went down that night. I must've done something really stupid and I need help."
Nope, I don't buy it. I think Casey WISHES she could black out what happened, but I hope her grey matter won't let that happen. Not now, not ever. I hope she remembers every minute detail and it replays over and over in her mind like a new form of torture. Because, the truth may never come out, but SHE knows what happened to that baby.
And like my grandma used to say, "God don't like ugly."