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mention the source?

She should not indicate the person she is painting! She does not draw from a drawing, she paints a portrait of a woman from a photograph!

then has her consent?

Not! the one who does not want her to draw, does not send his photos in the social network! This is stupid! Maybe the tree does not want me to draw it? Do I need the consent of a tree or a statue?

In the case of a copyrighted photograph, as is this case, the user needs permission from the author to monetize derivative works, and also credit the author of the photograph.

copyright on a photo, my art is not considered a photo!