Gratuitous egoism is what makes people go into politics in the first place, even the good ones. I remember reading that Jimmy Carter had a speech coach in preparation for his intro onto the national stage. He would sound like an idiot speaking flawless French, but it apparently did help him to some degree. Some people can get away with it more than others. A strong vocabulary and good reasoning will make a big difference. I think it would help her to improve in this area.
Football coach and soldier are the two professions where a pronounced accent of almost any kind actually seems to be an indication of greater gravitas.
You’re using Jimmy Carter as a defense for the benefits of voice coaching? LOL!
:-)