Louise questioned why the restaurants are still handing out toys based on gender stereotypes.
"Let the children decide what they would like, rather than letting their reproductive organs decide for them."
A McDonald's spokesperson said it was something the company was working on, as it agrees children should be free to have an interest in whatever toys they like, regardless of their gender.
"We realise that how our Happy Meals are identified may not be supportive of this."
The burger chain said in the next few months it would also permanently add the choice of books with Happy Meals.
"We're using this as an opportunity to look at how we ask customers what option they would like. We're also working with our toy suppliers to look at options going forward."