I guess that is the end of this sensei...and now an alternate timeline where short haired sensei gets with Tadashi?
It kind of pisses me off when someone says "I'm just in your way, forget about me and follow your dreams" as if the person they are saying that to can't make up their own mind, or they can't change their dreams. The same thing happened in Clannad.
Did she mean that she had never met her mother until she was an adult, or is she saying that she doesn't need to create her mother, because she can see her any time?