Not speaking to someone is a consequence of struggling with communication. Mindful communication will teach you how to rectify hard relationships and have hard conversations even with difficult people. When we listen and learn to show up to each exchange from a place of empathy we render the other person defenseless. When we give them their voice and their moment to share they don’t want to scream. They generally will feel at ease and be able to share with their heart.
For more on Mindful Communication Thich Nhat Hanh offers this explanation.