Board Thread:General Discussion/@comment-2239501-20160424224018/@comment-24463671-20160426010135

DPfanboy wrote: I doubt Shredder will be able to capture Miwa again soon. She has full control of her mutation and isn't under Shredder's control, and from what we know, she's not even in New York.

Though that does leave one question. Where is she? One of the things the second half of Season 4 will likley deal with the Turtles trying to find Karai and trying to help her, but she is conflicted and haunted by her past deeds and fears what she might do with her mutation.

In the end, when the Turltes have their fight against Shredder, Karai will likley join them and it ends with her becoming a member of the family.