Hi fellow step talkers. Im new here and well, i have found myself in a strange situation. Warning, long post but dang i need help haha!

Me and hubby have been together for 2 yrs, and have a beautiful daughter together (1) I have 2 kids (4+5) from ex husband and we parallel parent well together no drama. My now husband and i had a bit of a rough start as we navigated going from singles to a comitted relationship, but we sought help and things are really good now, we found our feet as a family and i have no complaints.

But... Someone does.. A someone who i have never even met! Hubby has a daughter from ex wife (the fuhrer). They were still very much enmeshed until not long after i came along. To put her behaviour in summarised bulet points - every contact there is a fight started by her - "im SDs mother so i will always be a part of your life" - "your a bad dad" "you should want to pay more CS to maintain the lifestyle SD is used to" - Gatekeeper behaviour - With holding child against court order knowing DH cannot afford lawyer to do anything about it - once boundaries were put in place she would yell at DH at drop offs - refuses to agree to set days and times for visits saying "once you step up as a father you can dictate days, until then you fit in with our schedule" and "i wont agree to set times and days as i cant guarantee i wont be busy that day" - DH was paying CS privately with the amount she decided. Every payday he would get a txt threat at 10am "pay CS by 5pm or i will be calling tax services" etc. I mean stage 5 clinger narc overly attached silver spoon bag of mixed nuts up in here haha.

Well i was kind of blissfully ignorant to this because it wasnt my circus or my monkeys UNTIL...

August 2019 he gets a txt saying "pay CS by 5pm or i will be calling tax services on your girlfriend!" later that day an email comes through from her lawyer with a without notice court order stating im not allowed to be present at any of the contact. Her reson? "SM might get jealous of DH giving SD attention and she might beat her up" she accused me of being an alcoholic (i ve had 3 glasses of wine in the last 365 days meanwhile she downs 2-3 bottles a week) that im controlling as i forced him to get rid of all their old furniture when i moved in (i moved my furniture in because it was better quality and more my taste, DH had no complaints), what else, oh that i said she wasnt "allowed" to meet me (?? You never asked tho haha?) and much more to even list.. But it gets worse.. After all this we cut contact 100% all the boundaries went up and we did nt engage not even in court. Then i find out she stalked my facebook so hard that she found out who my exH is (not an easy feat as we habe nothing to do with each other on social media) and began making these crazy statements to him, which i fear will affect my older kids (who i am stil working on getting more time with as they are with their dad FT, a situation that works well for us)

Please can anyone tell me what tge heck is going on here and what i need to do going forward to protect myself and my happy little fam bam! Thank you.