You know, this reminded me of a personal experience that some of the ladies here can help with.
So, I was at work at the time, and there was a woman in a supervisory role from Romania. She was very competent, and professional. I got on with her very well, and we worked together daily. She was married to an Italian chef, and they were planning of having a child in the not too distant future.
Anyway - let's say her name was X. When the occasion was appropriate, I would address her as Ms. X.
One day, while we were chatting, she asked me not to address her as "Ms". She said I should have addressed her an "Mrs". I tried to explain that I used Ms. because it's neutral, and if in doubt, why not be neutral? But she let me know she found it offensive in some way.
Now, I was happy to address her as Mrs., but I guess it's something that stuck with me, because I still think of it.
I don't know if this is a right/wrong thing. But would the ladies here have been offended by someone using "Ms"?