I´m just so confused right now… this is a very strange goal, but how did this even happen?

I´m truly puzzled for what happened here. Hockeyfilmpje found this weird play where an attacker sends the ball from outside of the circle, the ball seems to hit the edge or the inside part of the far post, and makes it back to the centre of the goal.

Then the goalie finds the ball in front of her feet and an attacker rushes in for the tip-in. How did this happen?