Can't have your cake and eat it too. You either tell people what happened or you just keep shut about it.
No point in being a reviewer if you aren't going to be honest. It does the community more harm than good, even if your short term goals are just to see the rest of their line-up. Honest doesn't necessarily mean brutal, just be diplomatic about it. However, if this is a group of managed girls, then I would think management wouldn't give too much thought about a negative review. Especially if they are bait-and-switching anyway. You bring money, they'll probably let you back in the door.
Also, if the first one is that bad and she is part of some crew, why on Earth would you take the other girls at face value? Sounds like you are just looking to hand over more good money over to bad operation. It's a sucker's play, and they're counting on you to "want to see the others" to prevent a bad reputation.