Tyrande did talk with Thrall as they fought against the Primalists.
Thrall says: The Horn of Cenarius!
Tyrande Whisperwind says: It has been too long since we fought side by side. As we did against Archimonde.
Lady Jaina Proudmoore says: But this tree shall not be sacrificed.
Meanwhile during the celebratory party on Amirdrassil, Thrall, Baine, Mayla, and Voss were at the table she sat at.
Now when it comes to the topic of forgiveness itself, I will say that forgiveness is ultimately a choice. Some forgive because they need it to help them, others forgive because they feel that the person who wronged them it or as recognize that they are actively changing from who they were, and others don’t forgive and that’s okay.