I'm as much responsible as he was for staying
Hey - stop this, all right?
Even in DV relationships where there are no children involved, the victim comes out of it with feelings of self-blame & shame.
No prizes for guessing where that mindset came from. DV victims are used to being blamed for everything, even the fact that their partner is abusing them.
Part of the process of moving forward into a happier life is finding a way to accept that the shame belongs to the abuser, not the victim.
Ask yourself this - why are you berating yourself for your ex's crimes, instead of congratulating yourself for escaping him after those first 3 years of DC's life? Look at so many posts on MN from women who were browbeaten into believing they could not escape & endured decades - you have managed to get yourself & your child out & should be celebrating that fact proudly.
What RL support are you receiving?
I am concerned that the abuse your ex heaped onto you is still affecting your thought processes & self esteem. If you continue with this mindset, you are allowing his twisted narrative to control you.
This is a very common pattern & it takes time to escape it.
Have you had any counselling post-relationship?
Either way, if you are not engaged with some form of therapy currently, please see your GP, or contact Womens Aid, for advice & contacts to professional, approved therapists.
The way you are feeling now is a hangover from the control & abuse you were put through by your ex. You are not responsible for that, you are not to blame for it, & it needs to stop poisoning your thoughts like this. You are the person who escaped you ex & brought your child to safety. Now it is time to capitalise on the bravery & resourcefulness that let you escape, & use it to find professional guidance in how to finally deal with the remaining symptoms of DV.
Professional help will give you the toolkit & support you need to rebuild your self-esteem. Better self-esteem will lead to a more resiliant you, who is better equipped to guide her child through the additional work that needs to be done around the attachment issues etc.
You deserve that support OP.
The stronger you are, the better able you will be to care for your child, to build even deeper links with them, & to ensure that they too have full access to any professional support they need as you both grow away from the terrors that were inflicted on you.
& also
you are a survivor who deserves to celebrate xx