[Zack clenches his teeth for a moment before he turns to her and looks at her squarely. Ever since their last meeting, Zack's wondered what he could've done to change things and how he could've done right by her. So he figures the first thing he can do is be completely honest.]

Tifa... I saw the plate fall.

[And knowing that Tifa had called the Seventh Heaven her own it's safe to say that this memory probably hits Tifa particularly hard.]

Shinra let it go. You, Cloud and the Barret guy tried to stop it from happening. But it happened anyway.

[He doesn't look away from her.]

You guys did the best you could.