Family members can run and tell whatever to management and 99% of the time that’s what they go by however you have some family members that just think they knows every thing and they don’t example: A no lift facility means just that. If you work in the field then you know what I’m talking about but back on topic. Family member gets mad because aid/aids going to use sit to stand lift cause resident want help stand. Gets mad and calls aid outta her name then proceeds to smile and laugh at what he/she just said and states that they will be writing a(n) email to administrator
Where is the justice for the workers? If the tables were turned and worker called family member outta their name the worker will surely be terminated no questions asked. So how should this matter be handled now it’s the other way around?
If I were you, I would alert administration to the incident that transpired, before the foul mouthed family member writes an email, so you can go on record giving your side of the story. But don't expect action to be taken against the family member, except maybe for admin to ask them to refrain from cussing or using slurs of any kind. I hope so, for your sake.
I didn't work in the healthcare field, but I managed employees who provided support to individuals who could be, at times, let's say excitable. My employees knew they did not have to endure insults and offensive language from clients, and they would have my support to remove themselves from the situation. In this context, that might look like leaving the room (if safe to do so), telling the offender you will not be spoken to that way, or even calling security to have them removed.
Once you find out what their approach is, you can make your decision if it's something you can live with.
But If you are employed by a facility and the regulations there are "No Lift" and you follow those regulations you can not possibly get in trouble. (If you do I would take that up with HR)
If a family member has a problem with the regulations you tell them to talk to someone that can address their concerns.
Never answer a question or give advice that is "above your paygrade"