Your friend’s obvious tattoos prevent her from presenting the corporate image your employer prefers be conveyed to clients who visit the front office. To my knowledge, people with tattoos are not members of a protected class, which would put an employer at risk for a discrimination suit.
Because Miranda continues to ask why she wasn’t promoted, and you have nothing to lose by telling her what you were told, I think you should level with her. She might prefer to work at a company where her chances for advancement aren’t stymied.
Yes. When you are done reading this, go online and see what the American Cancer Society and the American Lung Association have to say about the effects of secondhand smoke on children. Then, rather than lie to your mother-in-law, the next time she asks you to bring her a pack when you drop off the kids, summon the courage to tell her no because it isn’t healthy for your children.