how long do they want to stay.
i think 15 is too young to have an unknown youngster staying with you.
she is underage, in every sense.
what if she became ill, or had an accident. or asked for some medicament.
you would have to take on some parental responsibility that may put you in an awkward position.
i would not have her to stay.
Is it rude to not finish a book club choice that was selected by someone else?



