Post Traumatic MIL Disorder?

Anyone else have Post Traumatic MIL Disorder? Every time someone mentions my MIL or I see something that reminds me of her, I get this visceral reaction, like my chest tightens, and I feel on the verge of an anxiety attack. Even watching a show or movie that talks about the "importance of mothers" sets me off because that’s literally her whole shtick... guilt-tripping my husband for defending me by playing the “but I’m your mother” and "mothers should always come first" card on repeat.

For context: My MIL has spent my entire marriage disrespecting me, making cruel comments about my weight and struggling to conceive, acting jealous of my relationship with my husband (&voicing it), and even lying about having cancer for sympathy. When we finally went no contact, she escalated by spreading lies about us, making false abuse allegations against my husband, and even turning his extended family against him to the point where his life was threatened.

We’ve been completely no contact for months now, but I still feel like I have PTSD from the whole experience. Even though she’s out of our lives, it’s like my body still reacts as if she’s right there.

Anyone else relate? How do you actually move past this when the damage is done?