Anonymous wrote:OP here. My intent was not to judge or police her speaking, but the change was so sudden and extreme that it seemed bizarre she was not aware.
She is almost certainly aware.
She may feel neutral about it or she may actually wish she could stop but finds speaking to fit in at work becomes a day-long habit. Regardless, there is no need for you to be involved regarding this OR how your daughters speak. They will try on all kinds of attitudes and personas and vocal patterns and none is "right" or "wrong."