There’s lots of really solid practical advice on this thread.
I guess my question is whether OP’s DH is willing to put in the work to understand what’s going wrong and why? Even with support things don’t magically get better overnight and it’s still hard.
As PP said, I think there’s a very big difference between saying “I can’t do this any more, I wish we didn’t have them” and “I fantasise about throwing them off a bridge”.
Lots of SEN parents have been through tough, tough times - I imagine lots have probably thought the former at one time or another, but the latter?! Yikes. Definitely not.
And more than that OP, he’s telling a 7 yr old child that he doesn’t love her and wishes she wasn’t there. That’s going to cause irreparable damage, especially if she has RSD. He’s doing harm that will be very hard to unpick.
I don’t know what to say to you OP other than you might not feel as if you can fo this alone but you absolutely can. It might be exhausting and hard, but I really think you need to ask him to leave the house for a while, even temporarily.
Do you have any other support? Family? Friends? Have you been on any courses yourself to learn about parenting a neurodivergent abd/or oppositional child? Recognising and minimising the triggers can help.
You mention the very common shaken fizzy bottle effect after school - have you tried going to the park before going home? OT recommended it to us and it helped. It provided an outlet for the pent- up stress and anxiety.
I’m so sorry this is happening. Marital breakups are common with SEN families because it IS so bloody hard. But his willingness to show his disdain to your child needs to be stopped now. If he can’t rein himself in, he can’t be around her.
Sending you love.
I am an autistic/ADHD woman with two autistic DC, one of whom who also has PDA and ADHD. I get it 💐