When Sakura went into labor, Sasuke brought her to one of Orochimaru's hideouts, where Karin was at, and Karin helped Sakura give birth to their daughter, Sarada. Because of this, Karin and Sakura become friends, and Karin accepts that Sasuke is happy with his new family.
Sorry to say it but Karin is the mother of Sasukes daughter. It was announced not only in the manga but within the new Naruto series. That means it is cannon.
Whether she still has romantic feelings for Sasuke is not confirmed, but the following lines she had stated "connections come in all forms" suggests that she still holds him in endearment, even if it's not romantic in nature. Of course Sasuke and Karin never had a romantic relationship.
Sarada eventually learns from Sakura that she is her biological mother. After she confirms this, Sasuke says that Sarada's existence shows the connection between him and Sakura. Karin later explains that she was Sakura's midwife when Sasuke and Sakura were travelling together.
Loitering - Defined An individual who decides to hang out on a street corner to people watch and pass the time could, in some jurisdictions, be accused of loitering. The group of friends who decides to hang out near the entry of a local pizza shop on a Friday night could be accused of loitering in some jurisdictions.
Using "BPA-free" plastic products could be as harmful to human health -- including a developing brain -- as those products that contain the controversial chemical, suggest scientists in a new study led by the University of Missouri and published in the Proceedings of the National Academy of Sciences.