All right, I think I was wrong and this is in fact Mal, which is blowing my mind after following her for years.
First pic I'm attaching is another one where what you can see of her face definitely looks like Mal.
Second is one posted by Reddit user LAdams20, who has posted OC of Mal in the past, and claims the pic is someone he knows. And the first one in the lineup is confirmed to be Mal.
Lastly, a post-pregnancy pic from her Curvage.
Now, here's a link to a thread (put a slash where I start a new line):
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