Kids come first! NC is meant for you & healing/bettering yourself. If you need to break contact for a child, then IMO it is a must. There are no set rules & I think if you felt what you felt due to the situation, then you are doing the right thing.
But please remember, I am not a Psychiatrist or Therapist. On the other hand, I did stay at a Holiday Inn Express last night.
I want to go streaking through the neighborhood & blow off some steam! Who's with me?