SHE NEEDS YOUR ADVICE..... should she study Islamic studies

My cousin applied law in this year’s jamb and also wrote the Post UTME exams but unfortunately her name was not released and she took the supplementary form and the staff at the school’s admission unit told her she will be admitted to study Islamic Studies.
But this girl is a devoted born again Christian and since the doctrines of Islam and that of Christianity are in direct contradiction as it might affect her walk with the Lord. She requests for advice.
Should she take up the course as she has been home now for 3 years due to lack of admission, and she says she can’t stay home any longer.
She needs your advice please comment below..