Don't mention the message. Confirm plans or the date or whatever. Bringing up the message can become awkward for her, maybe she was busy, maybe she was flushing drugs down the toliet, maybe she was ignoring you. Who knows, but that's all in the past it doesn't matter. Look to the future. Make and confirm the date, go on it, have fun. You don't need to blow off the message if she asks, but you don't need to ask her if she got the message, because what would the point of that be?
Hopefully, your message wasn't too drawn out. Maybe something like "Hey, it's AP11, just got back from vacation, call me back" instead of drawn out plans of what you were gonna do. If you need to call her, call her, don't leave another message. You're in a tight spot, there are no rules to the game, so just do what you need to do to get you out there on the date.