I can offer some general insights.
A narcissist's behavior can be unpredictable, and their actions are often driven by their own self-interest and need for control. Being blocked after a period of silent treatment is a common tactic that narcissists use to exert power and manipulate others emotionally. It can be a form of punishment or a way for them to regain a sense of control over the situation.
In some cases, being blocked might indeed signal the end of the relationship, at least for the time being. The narcissist may move on to new targets or sources of validation. However, it's important to remember that narcissists are known for their cycles of idealization, devaluation, and hoovering (i.e., trying to draw you back in). So, they might unblock you or attempt to reconnect at some point in the future.
Regardless of whether the blocking is permanent or temporary, it can be an opportunity for you to focus on your well-being and healing. Dealing with a narcissist can be emotionally draining and harmful to your self-esteem. Taking this time to reflect, set boundaries, and seek support can be crucial for your personal growth and recovery.
It's essential to surround yourself with a supportive network of friends, family, or a therapist who can provide guidance and understanding during this challenging time. They can help you navigate through the emotions and complexities of dealing with a narcissist and assist you in establishing healthier relationships in the future.