How did Tilly Smith save her family from the deadly waves?

Tilly Smith and her family had a carnival Christmas at a beach in Thailand. 

She was only 10 years old. 

She praised the sea water flowing towards the beach.

She accented a geography lesson and the video of Hawaiian Island in 1946. 

She began shouting to her parents to clear off the beach. 

Her parents heeded her. 

They took shade on the third floor of the hotel and were saved.

Final Answer:- She started shouting to her parents to clear off the beach. Her parents heeded her. They all took shelter on the third floor of the hotel and were saved.