de-lurking - Just to give you a possible future glimpse from your DD's perspective:
I had a bit of a useless father who I didnt see realy until I was about 10 - my mum was very unhappy about this and would have preferred he had stayed out of my life but my step dad said he was my father and I was old enough to make my own decisions about a relationship with him.
Let me be clear, he is not a bad man - never agressive or unkind or anything but quite simply and I say this without any sadness or without any drama - he just didnt love me - not really.
So I started having contact but he was flaky about it - to be fair he lived outside the UK but unless my mum called him to arrange to put me on a plane (each summer holiday) I didnt hear from him from one visit to another, when he did see me my step father paid to enable me to see him, never asked me one question that I can remember about me - just questions about my mum and what she was doing. I used to think there was something wrong with me before I met him and my mum didnt like to talk about him (didnt know his name what he looked like etc until I was 10) but once I did meet him I understood what it was all about - at 10 I could see through the bullshit and saw excactly how the land lay. My mum made a mistake being so uptight about him but she neednt have worried that I wouldnt see him for what he was.
You need to show your daughter that you did your best and were reasonable but she will ultimately have to decide for herself about him and I think unless he grows up she will know hes no good.
But that is for the future - right now she is a baby and you call the shots and only you.
Personally I would not reply to any messages that arent about making sensible and polite suggestions about the child and her access to her father and his family - if he sends you an email shouting and screaming - ignore - you only respond to polite and respectful messages - he'll either finally learn or give up.
Frankly I would do nothing and hope he just gives up.
Going to colleage is such a great step but you also need to live all your life - you are a young woman with opportunities.
I wondered why you didnt go on your date?