You can should'a, would'a, could'a as much as you want, the court will hear that she moved out of her lane into the path of the other car. Irrespective of weather you have the indicator on of not you STILL have to GIVE WAY. I don't understand how you people can't see that. It's her fault, she (her insurace) will have to pay, I recommend lodging the claim ASAP.