not unless she was either left for an unacceptable amount of time on the loo, or if she known mobility problems and the staff were aware of this. even a history of a couple of falls could be enough. it could just be one of those things...that may not be what you want to hear, but accidents do happen. it was disgusting as next of kin you were not informed. you could certainly complain about this. see your local pals officer (patient advice liaison servcie) and take it from there. hope your mum is now more comfortable and offer you my best wishes...