'She's only 17'
And still way more mature than Carolyn and Bruce...
shareOr birth certificate? Or license? Usually you have to show some forms of ID when you start a new job for tax purposes, W2 forms, oh and most importantly if you plan on getting pay checks...
shareGood point.
However I always got the feeling that Rose knew she was only 17 but she chose to turn a blind eye to it. Hence her "I don't give a crap" reaction when Carolyn reveals her true age to her.