How common is it to act tough in the workplace but docile in your relationship and with friends?

My good friend is an example of this. She's in her early 30's and have a daughter with her husband. Both are professionals. As both manager and owner of a corporation, she's strict and tough with others. She's basically an alpha woman in the job. If she fires someone, it's her final word, no second chances at all.

At home with her marriage: She's attentive towards towards the household, very submissive, total opposite, even old-fashioned feminine, very soft. There are no arguments ever. Total different persona than at the workplace.

With friends and family: Sweet and soft, emphathetic if one of us are going through a hardship.

How common is it to act tough in the workplace but docile in your relationship and with friends?
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