I believe that NC means more like limited contact. You should not initiate contact. No R talk. If WW talks to you you answer shortly. If WW does something for you, still thank her. You will know you talked too long and too much because you will feel anger, sadness, anxious. So the goal is to limit your contact well under the threshold for where you start to feel a negative emotion from the contact itself.
M:16 T:21 H(me) 38 WW: 38 S11 D16 D19 Red Flags of A: March 2018 ILYBNILWY: August 4, 2018 Moved out of MBR: September 24, 2018 BD/Confirmation of A: October 31, 2018 D Filed: March 27, 2019