Adoption Support Group
Adoption is the legal act of permanently placing a child with a parent or parents other than the birth parents. Whether you are looking to adopt, putting your child up for adoption, parenting an adopted child, or just thinking about it, this is the place to discuss.
If I was in your shoes, I would try to communicate my emotions either to my father, who seems to think that this contant will be a positive experience for you, or to the birth mother, who may crave for forgiveness and some sense of inclusiveness in your life. If you want her to stick around (and if you don't, you absolutely have the right), make sure she understands that you don't know her, but you would like to. Try to keep the relationship simple, so nobody's feelings will get hurt (yours included).
Hope I helped...