Hi Sohappy
I am sorry for your loss. It becomes clear from your post that you had a complicated relationship with your dad. It makes sense that you would feel conflicted then. Do you believe your father had BPD (traits)?
Even after doing a lot of healing, losing a close family-member will often remain very difficult. In the case of a disordered parent, losing that parent also means losing what little hope we might had left that things would one day be different.
Could you tell us a bit more about the healing you've done? Did you perhaps get help from a therapist?
To help you in your grieving process, I encourage you to take a look at this thread:
Grieving Our LossesTake care