But now I ask myself should I contact my ex and send her this link, so that we can work together in healing ourselves?
You're on the Leaving board, I assume the relationship is over, so it's best to just focus on the lonely child piece, if that's how you define yourself, and see what growth is in there for you, motivated by the challenge of grieving the relationship's demise.
Borderlines are need driven, you were once someone she was using to soothe her emotions when she got triggered, and at some point you became the trigger, the standard progression of a relationship with a borderline and nothing to do with you, it would have happened to anyone. So being at that point in the cycle and emotionally enmeshed with her, you are the last person that should be having those conversations with her, all her defense mechanisms would show up, and yours, and it can't end well. Best to focus on yourself, heal, grow, and take the new you out into the world in search of an upgrade you'll deserve, when you're ready. Take care of you!