In 1838, Jane found a new lover in the Greek Count Spyridon Theotokis (born 1805). Venningen found out and challenged Theotokis to a duel, in which the latter was wounded. Venningen generously released Jane from the marriage and took care of their children. They remained friends for the rest of their lives.
Though she was not legally divorced from Venningen until 1842, Jane converted to the Greek Orthodox faith and married Theotokis in Marseille in 1841. The couple moved to Greece with their son Leonidas (21 March 1840 Paris-1846 Athens). In 1846, after their son's fatal fall off a balcony, Theotokis and Jane divorced. Greece's King Otto became her next lover.