He gave her 8 choices. 7 lead to death, one lets her continue.
Of course, he knew she had no idea. He turned the hour glass and gave her 5 items from his suitcase.
She still had no idea when the hour glass was over. With his giant smile: don't worry, you have another hour to find out.
He turned the hour glass once more and told her:
You are missing three letters, they are within:
Why did she choose O6G?
This hint was added following @user118161's answer
For second part, what he gave her was three papers. One printed all black, another empty one, white color and one with a # printed in huge font size.
Hint 1 - 8th of April
The five items share something in common. What they share has 5 letters.
Hint 2 - 15th of April
The three rightly chosen letters from black white and hashtag plus the letters of words in Hints 1, when correctly concatenated, form a person's surname that help identify why she choose O6G :)
Hint 3 - 15th of May
They are playing Chess
I modified a little Hint 2 making it better. That is, his surname is 8 letters length.