Bless your heart. First props to you on being such a caring single Dad! Its hard to keep a consistent way of rules & life with shared custody. I been there & done that! My ex-husband was a alcoholic. Personally, i think 8 is too young for your daughter to really understand & comprehend what BPD is. Thats alot for a 8 yr old to grasp especially about her Mom. I would maybe talk ti her school counselor or Pediatrician & see if they have any advice. I know this sounds corny but, maybe check out some books for her age about BPD or mental health on her level and yall read them together. That way if she has questions you'd be right there to answer them. Not knowing how mature your daughtet is on our end here, she maybe the type of child where bein open & steaight up with her would be best. All kids are different. If shes seeing things as far as while at her moms and her moms actions, shes prob wondering somethings already. Your a great dad for being concerned & reaching out! You sound like a great dad, so im sure youll do it right. Remember we are a product of our environment! Good luck HumbleDad!😊 ... View more