To recap the OP: player dribbles, ends dribble, makes short pass, receiver runs away, player moves to where ball is now bouncing on floor and ball bounces into her.
IF we consider the end of this play to be an interrupted dribble, we have a problem because the player has already used her dribble, and a second dribble, interrupted or not, is an illegal dribble.
As Nevadaref pointed out earlier, either we have to consider the initial act of pushing the ball to the floor to be the start of a second dribble, which it clearly wasn't. Or else we don't have a dribble unless A1 retrieves and controls her errant pass, which she didn't do. So what it appears to have been is merely a loose ball that touched A1, but wasn't anything else. Well, that and a bad whistle.