As a mom-school is important but, so is doing what you like & what makes you happy. You did such a good job. Take time for your exams then come back, we'll all be waiting.
This reminds me of my niece calling me Uncle for sev years (I'm her aunt). If her dad said it, she would tell him no 'cuz uncle is a boy & aunty is a girl'. 'Right uncle Shell?'
If a naked person walked out out my kids room, my 1st thought would not be- yes, such a close sibling like friendship.
Ah yes, they are good friends......