If I'm being honest, yes, and also no. I feel if I should resent anyone, it is my mother for not talking about it. I could resent the father I grew up with for obviously favoring my older siblings, and in many ways I do, but I understand it differently now than I did before, and while he was harsh and traditional, he wasn't a bad man, just not a great father to me. And my biological father didn't know about me either, but meeting him was like a door opening? There were things about who I was that made sense to me in a way that never had before, and he stepped in and helped me navigate trouble I was going through and so I can't really resent him for having not been there before. The truth is that it probably varies on any particular moment - my feelings about the situation are still complicated, but I'm grateful to have the truth now. It's still fluid.
I think resentment would come naturally in your situation. I assume you were able to clean up the mess? But I can't imagine being only 17 and having to deal with that. Was your mother alive still? Were you close to her?
That makes sense, but I'm so sorry that you have that guideline to work with.