Just playing devil's advocate for a sec...Even if he wasn't drunk at the time, and even if he was just innocently giving her a ride home, he still LEFT A WOMAN TO DIE! And even if it wasn't in his power to save her, he DIDN'T EVEN CALL THE POLICE! The diver who recovered the body said she was positioned where an air bubble would have been, and that if the police had been called immediately there was a good chance she could've been saved.He was a womanizing drunk who left a woman to die. Then used his family influence to get what was not even a slap on the wrist.
Yes I would say that is pretty unforgivable. People like that should not be rewarded with a lifetime position in the senate.
Instead Teddy went home and went to sleep.