Wow. First off, LTC is usually short staffed so the fact that they'd send you home and provide care with one less nurse is very strange to me. If said in a professional and respectable manner, you're statement is appropriate. You were recognizing the inappropriate behavior and responding in a matter of fact way, representing the issue at hand. You did not allow or ignore the behavior. Does this resident usually display behavioral issues? Were you arguing loudly or becoming frustrated in front of other residents or family members? If the resident (demented or not) showed dislike towards you they shouldve just had you care for other residents until further investigation.