Cindy-
I know you love your daughter and you only want good things for her but wishing and hoping isn't going to take away whatever she has done this time. Ya know, OK, I can get you covering, making excuses for the money & credit card stealing, the lying about having a job, even her partying but this has gone past that and you cannot let her just continue to get away with things, not something like this!
If you love your daughter, if you love your grand daughter, now is the time to stop enabling and lying for her.. Stop letting your guilt eat away at you- you are not at fault here, you did not do this, CASEY did. She took away the one thing in the world that you adored, that gave you joy. Casey is already gone, you have already lost her. She doesn't care about you.. she certainly wouldn't cover for you if the situation were reversed (be honest with yourself now, you know it's true!).
I think you know in your heart, in your soul- that Caylee is gone. The way I see it somebody owes that child something.. your family owes Caylee, not Casey, something.