I mean, yeah she probably could've just pushed her and ended the fight right there. This is the same character who blocked rapid fire within spitting distance of her in all directions. She probably could just end the fight.

That all being said it's not like the bad guys had been much of any threat in this episode. Din and Ahsoka pretty much had the whole thing under control so if Ahsoka felt like fighting then why not, she's not going anywhere and can get the information she wants anyways. For the flack I give this episode the fight is not one of them, that was fine.