Bo, this stuff is certainly not easy! I think you handled that convo quite well though. I agree with you that this is not the time to share feelings with her. She's more likely to use it against you then she is to applaud you for it.
IHS's are just so difficult because you're sort of not together but you ARE still together too. Very hard to give a WAS time and space when they are right there in your face all the time. Just keep up your validation and try not to let it affect your PMA.