Dreams involving deceased loved ones, especially parents, can be particularly intense and often reflect deep emotions and unresolved feelings. In your dream, your deceased mother trying to harm you and your father could symbolize feelings of fear, loss, or unresolved conflict related to her passing.

Stabbing and violence in dreams can indicate feelings of anger or frustration that you may be experiencing in your waking life. The act of defending yourself and your father suggests a desire to protect yourself and those you care about from emotional pain or past trauma.

The smile from your mother after being harmed may indicate a complex relationship with her memory. It could reflect feelings of guilt or fear about moving on after her death.

Consider reflecting on your current emotions and any unresolved issues related to your mother's passing or your family dynamics. It may be helpful to talk about these feelings with someone you trust or a professional who can provide support.

Remember, dreams often serve as a way for our subconscious to process emotions, so exploring these feelings can be beneficial in your healing journey.