Watch the heartwarming moment this girl learns of her adoption

A Utah school's security camera captured the emotional moment a Utah girl learned that she and her two siblings will be adopted by her foster family of two years.

Tannah Butterfield, 11, leaped into school office manager Jackie Alexander's arms when she shared the news with her.

Alexander, known as 'Ms. Jackie' to Tannah, has known the girl for almost two years and has become close friends with her soon-to-be adoptive parents.

'A dear family I know has been fighting for as long as I can remember to adopt three of their foster children that attend our school,' Alexander shared in an Instagram post. 

'It's been hard to watch them fight this emotional battle. My love has grown for this family and I have learned so much from them as they have tried to remain positive despite many set backs.'

The video shows Tannah embracing Alexander like she'll never let her go.

'She just kept holding me tight, she kept holding me tighter and tighter,' Alexander said to CBS News.

Tannah stops by Alexander's desk every day for a short visit, so Tannah's soon-to-be parents Jen and Jeff Fisher called Alexander and asked her to share the news with the sixth-grader at the American Heritage school in South Jordan.

'In 12 years at this job, this is by far my best moment ever,' Alexander wrote. 

'To tell a little girl that she gets her family forever takes the cake. I can't even describe that hug...and thank heavens her mom doesn't mind that I kissed her a million times, and a million more after the film cuts off.'

'They are just caring, loving, they take really good care of me,' said Tannah. 'My heart was so happy, it was like, 'Ahhh!' It was screaming.'

The parents were shocked at the reaction to the video.

'We just feel like we're ordinary people that are taking care of three children that we love and we want to be part of our family,' Jen Fisher said to KSL.

This article was first published on dailymail.co.uk and is reproduced here with permission