Trying to fill in someone else's shoes is futile. The person will at best be a shadow of the one who shoes they are trying to fill. It is best to have new shoes (their own) rather than live in the shadow of another
As Ellen was running away from Espinoza she programmed her clothes to look like the brick wall that was behind her. Espinoza was able to see her because her hair was a different color then the brick wall.