<human>: Can you provide a brief overview of the text?

I had a one night stand 3 weeks ago and just got a call from her saying she is pregnant.  I have no desire to be a father.  She is unwilling to consider abortion so I think the best option is adoption.  When I brought it up to her, she said she would consider it, but couldn't promise anything.  She told me she was adopted and she doesn't have a good relationship with her adoptive parents so she is hesitant to give her child up for adoption.  

Also, she has a 4 year old girl already and lives with her parents.  The dad isn't very involved.  

My thinking is that if I can assure her that the home the child will be going to is a good one, then there will be a much better chance in her choosing adoption.  I don't know where to start because it seems like there are just a bunch of independent agencies.  I could use advice both in finding agencies and in how to talk to her about it.

On one hand, I want to be supportive of her throughout her pregnancy even though I don't want a relationship with her.  On the other hand, I am worried that being supportive will make her see me as more of a father figure and be more likely to keep the child.  

A few more details:
I was stupid and didn't use protection.  I assumed she was on birth control and she wasn't.  This, plus her casual attitude when she called me made me think that she was trying to get pregnant.  She did admit to also having sex with someone else close to the time we had sex, but for some reason she thinks it is more likely mine.  I will get a paternity test when possible.
<bot>: I[27M] had a one night stand [w/22F]. She got pregnant. Where can I start finding resources for adoption?