No contact means ending communication to protect your wellbeing, and it's a valid choice — even with a parent. It isn't revenge or cruelty; it's usually a last resort when staying in contact keeps costing you your health and peace. Some people choose 'low contact' instead. There's no universal right answer, only what keeps you safe and well — and you're allowed to change your mind.
No contact is one end; low or structured contact (brief, scheduled, gray-rocked) is another. You can start smaller and adjust. Protecting yourself doesn't require a dramatic final scene.
Especially with a parent, distance can bring grief and guilt — often the same guilt that was used to keep you close. Feeling it doesn't mean you're doing the wrong thing.
If someone has been threatening or violent, treat safety planning as the priority. In the U.S., the National Domestic Violence Hotline (1-800-799-7233) can help you think it through; call 911 if you're in immediate danger.