(((JoCino))) - welcome to SR, though sorry for what brought you here. You've gotten some good advice, and I can tell you, we have dad's here who have sole custody of their kids.
I also have to say that (((Laurie))) seems to know more stuff about more things than anyone I've ever met, and when she's led me to resources for what I was going through...she was right on spot.
Go to CPS, take the letter, find an attorney who values you putting your daughter's best interest as priority as much as you do.
In the meantime, keep coming here..lots and lost of ES&H (experience, strength, and hope) here.
Hugs and prayers,
Amy