You probably do have a lawsuit against the wedding planner, if she did not provide the agreed upon services and/or provided them in a negligent (careless) fashion, whether herself or through some person covering for her. Either she would have breached her contract or she would have caused you a loss or damages through negligence.However, what you could sue for is most likely a return of the money you had paid her, and/or possibly for the value of the things she actually broke or lost. If the return of you money would be all or most of what you could potentially recover, then--if she actually follows through and gives it back to you--you may not need to sue; if you get back most or all of what the lawsuit would be worth, then there is no value to actually filing the lawsuit. If she doesn't follow through, then you could likely sue her.