When did Henin decide to return to tennis?

Question

While many surmised Justine Henin’s decision to return to tennis after she had quit the sport in May 2008 might have had something to do with Kim Clijster’s US Open 2009 victory (Clijsters came back from more than two years out of the game to claim the title almost immediately) that’s not what the player says. According to Henin, the decision was taken in mid-July 2009, before the US Open was held.

Answer 1

More likely that Henin couldn't stomach seeing Clijsters win trophies