Birthdays mark important milestones in a child’s life.

Her mother, Heather Krings,confirms, This will be her final birthday.

Day by day we lose a little bit more.

Family Organizes Last Birthday For 4-Year-Old With Terminal Brain Cancer

But how do you tell a 4-year-old?

It rips your heart out,saysKrings.

This effort quickly spread outside of Wisconsin, collecting attention from other states and even around the world.

Family Organizes Last Birthday For 4-Year-Old With Terminal Brain Cancer

Even NFL football player, JJ Watt, who is originally from Pewaukee,sent a letterto Delaney.

Its a little overwhelming, Krings admits.

Shes got so much love pouring in.

Family Organizes Last Birthday For 4-Year-Old With Terminal Brain Cancer

Theres no way that we would be able to put her through opening thousands of cards per day.

We pick out a handful and open them for her.

Cards that play music are a favorite.

Her family is asking for help to give Delaney an amazing last birthday on December 16.

People from around the world are sending their love and wishing Delaney a happy 5th birthday.

Happy (early) 5th Birthday Delaney!

From Arizona back home to Pewaukee, I hope you have a fantastic birthday surrounded by family and friends!