Hi InNeedofHelp
Welcome to the boards. I honestly don't know if there is anything you can do for her without her consent unless she is threatening to hurt herself and then you can have her 302'd. You may want to contact Children and Youth Services about the unborn child, not sure if they can help or not.
I am not sure where she lives in PA but there are many treatment centers but the bottom line is that she has to be willing to go.
I will pray for you and your loved ones. I hope you find the right direction which to go. I am sure there are others who maybe able to suggest more than I can.
Take care.
Many hugs,
Debbie