Ms Dickinson was waiting for her older children when she decided to click a photo of her two-year-old.
"I was out taking a photo of my daughter for Jodie and thought I saw something move! It's really windy here so I thought it was a bit of bark flying from the tree. Looked up to see this massive brown had just passed my 2-year-old," Ms Dickinson says on Facebook.
Luckily, the snake slithered away without harming Molly at all. "I can't believe it didn't touch her," Ms Dickinson says on Facebook.
And while she's glad her daughter is safe, she can't seem to get over the incident.
She didn't realize she had captured the moment in her camera until she told her kids about it.
"When I got home I was telling the older kids how big the snake was as they were in the vicinity too and one of them asked me if I got a pic of it. I didn't know it at the time but yes I did! It was at least 2m long! It's still making me sick looking at this," she says on Instagram.
In case you haven't noticed, the snake is right next to the toddler's legs.
The picture has collected several comments on Facebook.
"Lucky she didn't scare it at the wrong time. But man what a once in a life time photo. Awesome shot," says one commenter. "I'm sorry, I know how serious that situation was, but that is an absolutely spectacular photo, and I'm so glad your little girl is ok. Browns are very common in my area and I know they always make your heart race and this is an incredible size snake," says another.