Throw In Violation?

[JoeTheRef]

A1 has ball for a throw-in after a made basket. She gets ready to throw the ball in when a defender jumps the throwing lane in front of A2. A1 redirects her pass down the endline and the ball remains OOB. She retrieves the ball and completes the throw-in within the 5 seconds. Did she violate?? After coming down the court I told myself that she violated because she didn't throw the pass directly onto the court. But then I started to think that she can pass the ball OOB to a teammate after a made basket, the ball can slip out of her hands and remain OOB and she retrieve and complete the throw in, so did she really commit a violation? I don't have a rulebook at my disposal, and this was Girls 16U FED rules. Thanks in advance for any input and clarification.