Tamera Mowry-Housley shares a heartbreaking picture of her latest niece for her son's birthday

Tamera Mowry-Housley and her family are struggling to cope with the loss of her 18-year-old niece, Alaina Housley, after the tragic shooting in Thousand Oaks, California, last week.

On Monday, Tamera went on Instagram to share a picture of Alaina and his son, Aden, at the age of six.

"Happy 6th birthday, Aden! "Alaina was excited to come to your birthday party. But as you said, buddy, "She lives in your heart now." We like you. "

In the photo, the deceased Alaina poses with the adorable Aden who smiles brandishing large bouquets of flowers.

Earlier in the week, Tamera paid tribute to her dead niece in a moving note, writing, "My heart is broken. I am always incredulous. It's not fair that you were kidnapped. I've been lucky to know you since you were 5 years old. You stole my heart. We will miss our inner jokes, we will play the piano. "

Alaina was killed alongside 11 other people at the Borderline Bar and Grill on Wednesday. Tamera's husband, Adam Housley, shared a statement from his brother and sister-in-law, Arik and Hannah Housley, last Thursday.

"Words can not describe our sorrow after losing our daughter, Alaina. She was all we could hope for in a child: kind, intelligent, handsome and respectful.

To learn more about last week's events, watch the clip below: