I sped off to avoid awkwardness.
Hard to know what is inside someone else's head. Here is my guess on it though... .
You made her angry for speeding off first. That took her option or plan to speed away from you away. So you won the race to get away. So in her disordered mind she looked like the loser. A lot of this "happiness" they have with the replacement is exaggerated like what they post on FB. I think they want a link with us just incase of a recycle or to punish you for something or have you help change a flat tire one day also if it gets flat.