This isnt a teenager being QuirkyTM, this is a thirty year old woman threatening a very powerful woman’s livelihood, country, and child and then teasing her with her knowledge of subtle bits of her personal life and relationship with her child.
This is a woman making it clear that she is alone against the rest of the world by choice. She wants power, and she’s using everyone she can to get it.
I just want to make sure we all know sombra doesn’t wear toe shoes / vibrams. The are thick tights/leggings with reinforced padding on the under side. If they were toe shoes, the shading defining each toe would be much more pronounced and go further into her foot.