Ah, Fakebook drama. What is it about Facebook that makes most of the people I've observed on it act like narcissistic 12 year olds?
I avoid social media like the plague (although I work in tech and know a lot about it), and my dad is the same way. Both of us have specifically requested everyone we know who is on social media NOT to ever post photos or ANY information about us anywhere, period. My mom is only on FB so she can see photos of her grandkids; she never posts or comments on anything, and my sisteractually set up an account for her without even asking her permission first. My dad does not access this account, ever. This is important later.
My S recently attended a family event and took a photo of an unusual and valuable antique that my parents own. She then proceeded, without their permission or knowledge, to post it on her FB account, basically as a "look at ME!, my parents have X expensive item! That makes me important!!!" attention seeking post. My dad apparently found out and went ballistic, called my S and told her to remove it, that she should not have posted it and that she had been asked and had agreed not to post any info about him or my mother unless given permission. His reasoning is that this is a potential security issue in attracting thieves, and also it was NOT her property and he doesn't want everyone in her network gawping at his private business and and passing it around THEIR networks (which may or may not be private), let alone the fact that FB owns any content you post to it.
This isn't the first time she's pulled something like this. I've had her remove photos she took of me once or twice - I now just avoid being in pictures altogether when I know she has access to them. My S apparently threw a snit fit at my dad, told him he "didn't understand FB" or her privacy settings and then in retaliation defriended my mother, who hadn't been involved and was extremely upset about losing access to the photos which are her whole reason for being on there in the first place.
While my family tend to have drama queen tendencies and I neither know nor want to know exactly what was said (as I'm sure it was not etiquette approved), in this case I feel that my parents are justified in being very angry at her behavior. If my mom had done something, OK, I could see dragging her into it, but doing it over this is simple spite.
Hopefully it's now resolved (I think she refriended my mom) and nobody will bring up this incident to me again, but if my S does bring it up to me expecting me to commiserate about poor abused her, is there a polite way to tell her that she acted like a self-absorbed, spiteful pre-teen drama queen and that I don't want to hear anything about it because her behavior frankly disgusts me?
Probably not, but I thought it was worth asking.