What are the Islamic websites that can be recommended to a Muslim colleague, by name only, who speaks English and French, and has doubts about the faith, especially websites that address debates and respond to Western slanders against Islam?

A girl who doubts the creed is at risk of disbelief, and it may lead her to fall into kufr (disbelief). If she is in this state, it is not unlikely for her to abandon prayer or fasting. It is obligatory to advise this girl and remind her to repent to Allah, and to awaken her from her heedlessness before it is too late. It is recommended to employ wisdom, good admonition, and a kind approach. One can benefit from the English section of the website, from Sheikh Ahmed Deedat's website in refuting Christian falsehoods, and from the book "Islam Challenges" by Wahiduddin Khan, if a translated copy is available.