I don't see it as a matter of my preference. It's more about whom is speaking to me. Not everyone has the right to be so personal. Those who do know it; those who don't should know that they don't. There's more to it than this, but the fine points take a long time to spell out.
When in doubt, I see nothing wrong with telling some that she looks happy or relaxed or like the world is hers. Something along that line. It covers a lot of territory without naming the thing that may be unwelcomed.