The way one communicates speaks a lot about his/her character.
I've recently had an encounter with a someone (let's call her A) who was rather direct, perhaps overly so. During a meeting, she brought up a personal issue against person B, who was also present but was greater in seniority. Although it was a passing remark and no conflict occurred between them, others there had formed a negative impression of her, simply by the one line she said to B.
The appropriateness of setting was probably a factor, but her tone played a greater role in causing others to form ideas about her character. I can't replicate the exact tone of her voice here, but the general consensus was that she appeared to be rude and had no respect for others.
Another incident in which she had to make a request also incurred the displeasure of others. While asking person C to do her a favour, she messaged C (a superior, but also someone A knows personally) in an instructional tone.
Do you think she should be told about the effect her tone has on others? If yes, how should she be told, and by whom?