Hi tafkas
Thank you for sharing your message.
Having a borderline parent can be difficult. The act of discovering it can be too. Even more distressing are any effects that you perceive it has that has flowed into your own life with intimate relationships. These kinds of pains, I think, can be quite difficult to forgive.
I encourage you to explore other areas of the site. There are areas relating to borderline family members and healing that may be of interest to you.

I'd like to share that your participation here is your own choice. Part of the job that some of us nons adhere to here is acting in a manner consistent with our own values and beliefs. I do think that being careful of fixing-behaviour is of special importance to a large amount of us here. But I do also think that staying does not necessarily make one a "fixer" of others.

These choices are our own--whether we're conscious of them or otherwise.
I wish you well on your recovery.