Hearing someone's voice, Obi-Wan's eyes turned to look at the woman and he just tried to shake as head at her. It was best if she didn't get involved.

It was a bit late for that though, and Obi-Wan found himself flung in her direction. Sorry Grace! He can't help where he's being thrown! Hopefully she gets out of the way. Whether or not she does, it will be a painful landing. But now there was someone else involved. Someone who had nothing to do with their quarrel. It was one thing if Anakin wanted to pick on him, but he wouldn't allow him to hurt an innocent person.

Thus Obi-Wan pushed himself up to thrust his hand forward, sending a Force push with intent to knock Anakin back.