Hello there,
nikki, and welcome to bpdfamily. You'll find many people here who understand.
I'm so sorry you feel lost, defeated, and alone. The end of these relationships is painful and difficult, and leaves behind a lot of confusion and emotional debris. You've been through a lot with your ex, and it will take time to process, detach, and heal.
Like
hope said, you are stronger than you know. It will get better. These relationships often strip us to our cores, but they give us the beautiful opportunity to rebuild and become wiser, stronger, and more loving towards ourselves.
I'm glad you have a counselor who sounds helpful and supportive.

How is your daughter doing?
Keep posting - it's so therapeutic to talk - and take care of yourself. We're all here for you.