In the Charles Darwin as the first anti-psychiatric thinker timeline, Sandra Tanner was an atheist woman whom Charles Darwin married in 1837. She persuaded him to be more openly vocal and pushy about the theory of evolution than in OTL. She sped up the works of Charles Darwin by discussing theories with him. She also wrote books on her own: "Problem solving in low-ranking individuals in animal groups" in 1839 and "Limits to sexual selection" in 1841. She also coauthored the 1840 book "Natural selection as the mechanism for the transmutation of species".