My daughter went off to College and had a break down. She is still in college, and in therapy but now says I shattered her life. This through an e-mail. I was a single parent 90% of her life. We had a loving relationship. We never went one day without telling each other "I love you".

The thing about therapy is that it brings a safe haven for us to talk about issues we sometimes even don't know we had but have always been there conditioning our behavior and how we deal with others. Clearly your daughter has some of her own and is now sharing that with you, we can reckon not in the best manner.
Regardless of that, this email/outburst of hers, in my opinion, is a way of letting you know how you are a part of those issues and put them over the table. That doesn't mean she doesn't love you still, but there's something there you need to talk about. Human relationships are filled with paradoxes, we can love someone yet at the same time deeply resent what they have done sometimes unwillingly.
Don't know enough to give a more in depth opinion, but maybe you had one of those relationships where you were really close and talked about a lot of things, but maybe weren't able to address the real problems each of you had in their lives. Anyhow, I think that, if she lets you, you should consider be a part of her therapeutic process

She is probably going through some tough stuff with her therapy.
You say you two had a hood relationship prior to this. Don't take it personally. Just ride it out, she will come around.
Send her an email daily or every other day, let her know you love her and to let you know if she needs anything. Keep the door of communication open.
Hang in there mom.