Can CPS enforce no contact between me and my minor daughters for phone harassment allegations even if the kids and their mom want me in their lives?

I may not even get charged from the looks of things. It's been over 6 weeks now, the kids are living with my father (step-grandparent). When I say 'step', I don't mean legally adopted, I have raised my kids since they were 2 and 4, more of a standing in as their father and their biological father has never been in the picture. CPS is telling the kids mother she needs to move out or risk losing the kids. No threats were made and I did not intend on harassing through SMS messages to my 16 year old. CPS originally was looking into abuse found there was none, now all they have is the phone harassment and might not even have that. My 16 year old may even want to testify against the allegations or is refusing to accept it. I'm not even sure how to inquire as if I am being charged, they have had the record of text messages for almost 5 weeks now and I have heard nothing.