Unlike the millions of Syrian refugees who hold on to their passports and travel documents with their lives, numerous foreign fighters of the Islamic State destroyed their passports to hide their identities and spent years traveling between Syria and Turkey with relative ease.

Now that the Islamic State has been defeated in Syria and the dreams of a false caliphate have been crushed, many foreign members of the terrorist group, including women like Ms. Muthana and Ms. Begum, are crawling back to their countries of birth.

Ms. Muthana and Ms. Begum, who were both recently arrested by the Syrian Democratic Forces, are being held, along with other Islamic State families, at al-Hawl refugee camp in northeastern Syria.

Ms. Muthana, who left Alabama in 2014 to join the Islamic State in Syria, was recently arrested by the Syrian Democratic Forces. She has expressed regret for her actions in recent interviews but I remember her as the Islamic State member, who used social media to call for murder and worked as a recruiter.

Ms. Begum, who left Britain and joined the Islamic State in 2015, rejected her family’s many requests to return home. After she was arrested by the S.D.F., she spoke to Sky News television about her decision to join the terrorist group. Ms. Begum hesitated and replied that she didn’t regret her decision because it changed her as a person, that she enjoyed her time with the group, and met her fighter husband because of it. It suggested little remorse; she and others like her still believe in the poisonous ideas of the Islamic State.

I have long wondered whether I would find it in my heart to forgive the foreign members of the Islamic State, including women like Ms. Muthana and Ms. Begum, for what they did to my people and my home. I certainly couldn’t forgive the male fighters and asked my female Syrian friends about Ms. Muthana, Ms. Begum and other jihadi women like them.

Every Syrian woman I spoke to emphatically stated that they could never forgive anyone who joined or supported the Islamic State. When I asked them specifically about Ms. Muthana and Ms. Begum, every female friend replied that both women should be arrested and prosecuted to save the Syrians and world from the danger they might pose at some point.