Welcome to the forum Loverspit. It sounds like you are going throught a lot of emotions right now. I would like to say to slow down and take things one day at a time. Don't rush into anything. And try not to assume things. Like that you are being replaced by your niece. I am sure that your sister has enough love to go around. But remember with a new baby, there is a lot for her to do. Maybe she is just getting tired. So try not to read into things. I am sure that she loves you very much.
I wouldn't rush into meeting your biological mother until you have sorted out these issues that you are going through. And remember she may have had some issues of her own as to why she gave you up for addoption. This could get quite confusing for you. So take it slow.
Keep posting and let us know how you are doing. Feel free to come here at any time. I am going to post some sites for depressed teens here soon. You might want to take advantage of them.
Moderator-Depression and fibromyalgia
fibromyalgia, Chronic fatigue, depression,allergies