Her fairly detailed Wikipedia entry is here. More biographical information is here, and an article discussing the many paintings she made of female nudes is here.
Serebriakova, before her marriage, had a good deal of art training that built upon her family's artistic background. Even though modernism in general and the various Parisian "isms" that were popping up in the early 1900s were known to her, she accepted little of their stylistic offerings.
One thing about her paintings that I found interesting and charming was a sweet little smile she placed on many of her subjects. I'm pretty sure that she had such a smile herself, but find it a bit curious that so many others had the same.
This was the painting that launched her career.
Thought to be a self-portrait.
Her husband, who died in 1919. This left her with four children, only two of whom were able to leave Russia and join her in Paris after the Communist takeover. He is not wearing a sweet smile in this painting.
Even some Russian peasants are smiling almost sweetly.
She was a ballerina.
A late painting, but the characteristic smile still appears.