I may be lame, but I think it was NICE that W said those things, aren't they what you wanted to hear? I still think it's silly that she pegs your drinking as the fear and not her erratic behavior of late.
In a way, if I were to interpret, I see this as her way of complimenting you, respecting you (FINALLY) and still making her point of what was hard for her before you pulled out of depression. In a twisted way, she's saying, that was hard for me, and you're not doing that anymore, and I'm still a little mistrustful that you might again in stress, but am grateful that you're not now.
Really, I think this is what she's doing. Remember, you BOTH mistrust each others good behaviors. She is now slowly opening her eyes to your improvements, the fact taht you held it together under insane stress. She's trusting that this is real. She had you pegged to never change, so this is a shock for her.