It is incredibly easy to groom a 15 year old. It will then typically take decades for that person to work through the trauma and admit to the brainwashing. She isn't going to have any remorse this close to the event without having a mental breakdown.
Then again, there is also one from the US who wants to return.
In a letter obtained exclusively by ABC News, she described herself as a "naive, angry and arrogant" young woman when she set out for Syria. Muthana said she thought she understood her religious beliefs and had stopped listening to her family.
"That was a big mistake," she said in the letter.
"During my years in Syria I would see and experience a way of life and the terrible effects of war which changed me. Seeing bloodshed up close changed me. Motherhood changed me. Seeing friends, children and the men I married dying changed me. Seeing how different a society could be compared to the beloved America I was born and raised into changed me," she said.
"Being where I was and seeing the ppl around me scared me because I realized I didn’t want to be a part of this. My beliefs weren’t the same as theirs. In my quiet moments, in between bombings, starvation, cold and fear I would look at my beautiful little boy and know that I didn’t belong here and neither did he. I would think sometimes of my family, my friends and the life that I knew and I realized how I didn’t appreciate or maybe even really understand how important the freedoms that we have in America are. I do now. To say that I regret my past words, any pain that I caused my family and any concerns I would cause my country would be hard for me to really express properly."
She wants to return and face justice. So it can be turned, or maybe she wasn't as brainwashed.