Non-custodial Parents Keep Upsetting Child With Unwanted Communication - Is This A Good Move?

Location: Ohio

I have sole custody of my sibling. Our parents are abusive shitbags. Situation with the kid would have been on the news if I'd gone the criminal/CPS route rather than the civil route. They're supposed to be going to rehab and reunification therapy to regain supervised visitation. They are not. It's a bit sad, but nobody really cares whether they go. The child does not wish to speak to them or have any contact whatsoever.

The order states: "[Parties] will follow [Therapist] reccomendation regarding therapy, communications, and visitation."

I did my part talking to the caseworker, getting established, and our interviews. Our parents contacted them but never completed intake for rehab. So, there is currently no communication reccomendation.

They text the child's phone constantly with "I love you" "I miss you." It always ruins her day. It's upsetting to her. Today our dad sent her flowers for "4th of july"? Very odd. They've sent other mail in the past when she doesn't answer her texts. She wants me to put a stop to it, I don't want to pay another retainer fee and take it all back to court, so I'm trying to figure out what to do.

I was considering calling the caseworker, asking for a communication reccomendation in writing, and sending it via certified mail, along with a copy of the order with the communication section highlighted. Possibly a cease amd desist. I'm not in a position to seek out paid legal advice for this (why make a mountain out of a molehill?) I just want either confirmation or criticism of this idea, and possible alternatives. I want to put a stop to it without opening up a can of worms.

Edit: the problem is the communication seems loving and innocuous, but if you knew the whole situation, it's all manipulation without accountability.

EDIT: I was able to talk to my old lawyer ✨️for free✨️ and his interpretation was that the communication is ✨️unauthorized✨️ (: thanks everyone, I will be giving 1 warning then going from there