Being a Mum is so very very hard, especially when you carry all the emotional load, which seems to be very common in many families but particularly in ND families I am noticing. The burden is 100% and also a lot of defending, deflecting, minimising to protect the children from the DH damaging them too much - this seems to be a common theme.
My brother used Sam Harris, Waking Up app to help get his control issues 'under control' LOL! Non-dualistic meditation and philosophy has helped him a lot and me too. Over time some kind of acceptance starts to feel more natural...
I also have to say that escitalopram 10mg is also doing some of the heavy lifting for the OCD. It helps your brain move on much more quickly and stop obsessing and going down the rabbit holes and flipping domino like switches that then trip other wires etc. It's almost like with OCD you develop a groove of thought in the brain and then your thoughts just keep running in that groove and it gets deeper and deeper but escitalopram or similar is able to make the groove almost flat so it's like you have the thought, but then your brain just moves onto other things so much more easily and you find you've barely noticed that thought and you're onto other things. This keeps happening and it's like the groove becomes flatter and flatter over time and the habit of that thought and the fear of it, diminish over time. It's a great experience and life becomes so much more relaxed.
My brother is probably on escitalopram for life. Many of my ex-patient friends have accepted they're on theirs for life too. I may well be as well but I'm not ashamed or saddened. I know I have a sensitised nervous system from trauma as a child and a brain that thinks in a certain way maybe because of this, because I never felt safe or perhaps because of genetics, or perhaps a mix of both, who knows, but if I had a heart problem, I wouldn't not take a medicine to help it, I'd take it because it would help my heart. I see my medicine in the same light, it helps my brain, it helps me have a better life. Genetics, upbringing, circumstance, environment you're living in, life experience, they all contribute to how our thinking unfolds. I'm happier than I have been in a long time. I just hope it lasts - but look - there's another thought- another fear! Acceptance and commitment therapy has also been helpful too. Observing thoughts and knowing they aren't real - they're just thoughts...
Anyway, this has become looong... rumination is definitely something you can become aware of and you start to see the dominoes before they fall and you go - aha! OK I see you brain, I see what you are doing... and just the awareness starts to help you. Then there's exposure therapy which can also help, all of this they could do in therapy with you and support you around your specific fears. It sounds like you already have this awareness and... then redirect. If it's still troublesome though, medication could be the thing that takes the constant devil on your back feeling away.. Anyway, not recommending or recommending, just sharing my experiences.
I know how powerful the mind is, you have my sympathy. Group therapy was amazing to have it broken down in and hear other people's OCD experiences. It was strangely reassuring to know a) I wasn't the only one and b) hear other people's fears and see how irrational they were which c) ended up helping me see mine in a less fearful way. It was good to talk it all through. Nothing like getting it out your head and into someone else's and get them reflecting stuff back to you. It kind of takes the power of it, if you have a skilled therapist and a room full of people that want change. In fact I was so confronted by the first group OCD session I couldn't sleep for 2 nights. It was like I finally understood what had been going on all these years and I was in shock! I felt so called out but in a good way. Crazy!