The end of this tv movie from the 70s had a deaf girl (maybe blind) on the beach. Someone has a radio, saying that a tidal wave is coming. Everyone runs away, but the girl has no idea, so she’s still laying in the sun. Her dog goes to get help, maybe some guy rescues her. I’m probably getting a lot of this wrong. But it’s something like this, and I vaguely recall she gets rescued before the wave hits.