To have not informed estranged family.

I'm not estranged from my family but still didn't tell them when I had surgery, only one knew. I just didn;t think it was any of their business and that they would have been worried unnecessarily if they did know.

Your colleague sounds like a AH, it's none of her business what you do or who you tell. As she won't let it drop make a formal complaint of bullying in the workplace or tell her you refuse to respond to anything on that topic and stick to it.

Be more firm. Right I have already told you stop commenting on my personal life. And report her every single day she does in writing

My own dps haven't known my business for a long time.
Dm since 2012..
Df since 2000...
I could list a page of incident that haven't occurred to me to tell them about over those years... Df doesn't even know how many dc I have.

Omg, no op ❤️

I'm completely estranged from mine, and everyone from my past. I took my baby and started a new life. She's now 5. Best thing I ever did

This colleague sounds like a twat. You need to tell them, in no uncertain terms, in front of management, that they are upsetting you and to stop - don't worry about her being younger, clearly she thinks her opinion on your personal life is so important she needs to bloody harp on about it, she needs to be told!

Congratulations on your freedom 😊 x

You need to stop telling your business to colleagues (or anyone else your business does not concern). That’s rule 101 of being estranged. Unfortunately, you get people like your colleague, who you tell a little bit of information to, and they go on and on about it. This is especially true when it’s about being estranged. Then you end up being made to feel bad, hence the post, when you didn’t in the first place.

Stop telling people your business.

God know. I've been estranged from my mother for 8 years. Didn't cross my mind to let her know about any operations or illnesses I've had.

Next time id tell her very rudely to mind her own business.

Of course not. At this point though you need to be more direct.

‘thank you for your concern. I understand you mean while but I am getting exhausted by the fact you won’t listen to me. I do not speak to my family. They have no idea about anything in my life and therefore they did not need to know this. It is my decision. Please respect it, if you bring it up again I won’t be so polite, and you’ve had fair warning. But honestly I’m likely to tell you to leave me alone. In a very sweary manner. So please save us both the bother and let it go’.