SO LIKE I'M CONFUSED HOW DOES LADY MACBETH EVEN DIE???

I'm not really sure how she dies and I really would like to know, only because she's a bitch and uncool. In the beginning of Act V, Shakespeare mentions how Lady Macbeth has gone crazy. She is sleep walking in her sleep and doing strange things while being asleep. (This is more than likely because the guilt of killing Duncan is getting to her). The doctor concludes that she needs a priest's help, there is nothing a doctor could do for her because she is insane.
Macbeth is about to go into battle whenever Seyton returns and announces the death of Lady Macbeth to him. He seems unaware of what just happened and says how she should have died at a later time, at a more convenient time.
But they fail to mention how she died.
So as the reader, we just assume she got sick or something.