you are more likely to get a false negative than a false positive...
i suggest getting to a doctor b/c 5 positive HPTs is a pretty sure sign that
she is pregnant
and waiting and not going to the doctor is not only hurting her it could be
hurting the baby...
you have to have prenatal care during pregnancy..
but she has choices and if she tells her parents maybe she can talk through
her choices with them
she is their daughter and they might be upset at first but, they'll come around