This is one of those times where you look at the situation for what it is and realize it's not your fault and move forward. I think it's kinda wrong of them to plan something different when it was your place to plan it and they completely changed it on you. But that doesn't mean you should get all down and out. While they are out doing whatever they will be doing, gift yourself with something nice, even if just a nice long hot bubble bath with candles around instead of the lights being on and nice mellow music. Reward yourself for trying and doing your part. You're a good person, Rayna. Don't let this bring you down.