BigBear....

(((Hugs)))

Before I found myself on the journey I am on... I was a woman who often replied "Nothing" when my then husband asked what was wrong.... this being the case.. I can only tell you from my experience... do NOT stop asking and trying to discover what the "nothing" is..

Yes, in the perfect world, partners could easily explain and understand the inner workings of others... but this is not a perfect world.

I highly recommend that you pointedly ask her. Explain to her your concerns, that you "sense" that there is something bothering her and as her partner you would like the opportunity to help in "fixing" it. You can't be held responsible for what you don't know is broken...

I wish you well... HUGS.. I know how frustrating it must be...