yes. I've read all seven books and i do believe she does.
By finding out how Moaning Myrtle died.
Moaning Myrtle was played by Shirley Henderson.
As she was born in December 1965 , Shirley Henderson was 35 when she played Moaning Myrtle... so she was the oldest actor cast to play a Hogwarts student.
Moaning Myrtle makes her first appearance in the second movie, Harry Potter and the Chamber of Secrets. She is seen in the girls bathroom when Harry, Ron and Hermione are making the polyjuice potion.
You are talking about Moaning Myrtle. No, Daniel Radcliffe did not play her, Shirley Henderson did.
It is at the end of Moaning Myrtle's walkway, pass her bathroom and keep walking. If you have the map it will be easier to find.
In Harry Potter and the Chamber of Secrets, Moaning Myrtle describes the last thing she sees as a pair of big yellow eyes implying that the basilisk has yellow ones.
Harry Potter doesn't have a diary. In Harry Potter and the Chamber of Secrets he found the diary that belonged to Tom Riddle (a.k.a Lord Voldemort). He found it in Moaning Myrtle's bathroom where Ginny Weasley had thrown it away.
Myrtle the Ghost gave them the clue that actually lead them to the Chamber
The Basilisk didn't kill anybody in Harry Potter and the Chamber of Secrets. The only person who came close to death was Ginny Weasley and that was because Lord Voldemort was using her life to restore his own.However, we do learn of Moaning Myrtle who was killed by the Basilisk fifty years earlier. She died in the second floor girls bathroom, which is where the entrance to the chamber is.
Harry didn't dislike Moaning Myrtle but they weren't extremely close friends.
if you mean moaning myrtle, she was killed by looking at the basilisk