Harry breaking the deal with Lea three times? When? (as of "Grave Peril")

[Dagroth]

I'm reading "Grave Peril", currently at the party at Bianca's, where Lea claimed Harry broke the deal he made with her three times: one years ago, one a few days back, and one just a day ago or so when saving Charity Carpenter at the graveyard.

I remember two of those (years ago, when fighting Justin or his demon, and the one when saving Charity), but when did the third (technically second?) one happen? The only meeting they had in the meantime, that I remember, was when going after Agatha Hagglethorn's ghost in the Nevernever (from the hospital's maternity ward), but I don't remember Harry promising anything to her back then? (unless "I will go with you... when Hell freezes over!" somehow counts?)

[Wizard Sibelis]

It was a continuation of denial of her original deal that did it I think. He refused to go when he was already supposed to have when last they met.

[Snark Knight]

The few days ago would have been when she came across him when he and Michael chased Agatha Hagglethorn's ghost back to her pocket dimension of the NN and he refused to go with Lea there.