Hi
Sometimes women can be very intuitive, sounding out something is 'wrong' in their world or relationship - yet not necessarily able to identify or name the issue, through fear....
She may sense that your 'all good KH status' is shakey...
I used to have overwhelming feelings of anxiety about our marriage 'matching' the JW profile re meetings, service etc - it was awful. That brain pattern of anxiety and stress translated into bouts of depression - I'm going through a miserable bout at the moment, old patterns of 'mind control' which produces SHAME are like systematic physical reactions - I'm so sorry you are both struggling.
So many 'wives' are vulnerable in the WT - it's the terrible angst of wanting to be picture perfect - JWs don't do 'messy' life - but to normal folk messy is OK.
Life is messy -we get trained not to see that as normal, as something to be afraid of - my non JW friends ( Christian and otherwise) just deal with stuff as it comes along. I had my first all out panic attack a few years ago, in my 50s - and then a sense of disassociation from the real world, which was frightening.
I tried going to meetings during that time and I felt like I was in a nightmare.....the 'hall' felt like the worst place to be - I wanted peace, kindness and uplifting spiritual food - the dynamics of our KH made me feel worse than ever.
if she has faith in God, that needs to be nurtured to protect her from the 'cult' angle....which is fake and painful.