http://www.rainbowservicesdv.org/index.php/site/whatwedo/
I also came from a loving family. I have a college degree, yet I got into an abusive relationship in my 30's. Your daughter doesn't need tough love right now, she needs to know unconditionally that she is loved and wanted. You do need to think of yourself first and your own situation. By all means, check to see if you have your daughter and her son move in with you before you take her in. If you all end up without housing you will be in a much worse situation. I just quickly googled "abused women with a local zip code" and this link came up. I would call them and see what information, services they might be able to offer you. Your daughter needs to learn to love herself, to know she is worthy of a supportive, loving person. There are many self-help books that are inspirational, but I doubt at this juncture that your daughter is ready for something like that, although you can try. WHat she really needs is some counseling. Call around to these different shelters, check out some local churches to see what they might have to offer. I offer the following prayers, affirmations that got me through my dark days:
Divine Love works through me and in me.
Divine Love guides and protects me, now and always.
Divine Love prospers me now.
I repeated these everyday, all day until they became ingrained in my soul. I strongly recommend daily meditaion. Just start with 5 minutes. There are several methods. Here's just one link that you can use as a resource. Meditation quiets the mind and will help release anger. It will help you both to focus.
http://www.wildmind.org/
I commend you daughter for getting out of this abusive relationship. That is extremely hard. Already she has shown she has the will, she just needs the direction. None of this works over night. Be patient and have faith.
If your daughter is not open to these suggestions, you shoulc go ahead and do them for yourself. Commit to doing it with your 16 yr old. Maybe the older daughter will be inspired by your actions. You can also use the above afirmations for someone else. After you say them for yourself, simply change the wording substituting your daughter's name for "me."
Bless you.
A.