Echo N8, just be quiet and listen and validate her feelings. Nothing has to happen straight away, yep she is all up and down at the moment so all the more reason for you to stay calm and focussed. If you need to say anything just say whilst you understand where she is coming from you do not want a D.
My H is also depressed although not BP and Im sure it was his depression that led him to leave in the first place, that aided and abetted with some of the things I was doing wrong but not realising and him not explaining himself very well either!
Good luck today patience is the key in all of this, dont pursue or chase her give her space to think.
____________________________
W 47 H 47 M 24 T 30
Once lost but now found and happily married again!