"I want you to be happy and use the gifts God has given you.
"You will be a wonderful nurse just as you are a wonderful person.
"Study hard in school, don't worry about a job."
She asks her daughter to be "patient with dad".
The US-based teenager shared the letter on Twitter where she advised people to "hug your parents a little closer and never take them for granted because you never know when you could lose them".
The heartbreaking letter has been shared more than 94,000 times in a couple of days and has been liked nearly 300,000 times (and counting).
A number of people from all over the world have expressed their condolences to the family, including celebrities like Patricia Arquette, who starred in Hannah's mum's favourite show, Medium.
