A: Potentially... though you probably need to get an attorney. It really depends on the circumstances, you might be able to win at trial, but maybe not. You would have to prove that you were being harassed (which you don't have to have them charge, but it would help). If you were not being harassed, then you are probably out of luck. There have also been some cases that have discussed what is an allowable response or not. The statute doesn't really tell you everything. Get an attorney, that will be the best thing you can do for yourself.
A: Probably not. Unless the biological father has given up his parental rights. A child only gets to have two parents. If the biological father still has parental rights, then the child can't be adopted. If the rights HAVE been given up, then he doesn't need to be involved at all.
A: You can look into legal aid. They can help offer legal services at lower (or free) prices. You also might be able to sign up for a pro-bono assistance. There are also attorneys who are willing to help out on a payment plan structure or who will give you some "low income" pricing. Good luck.