my dream about my mom

(trigger warning)

My mom dies three years ago. She killed herself and i found her. I haven’t thought about it a lot recently. My dad moved on and married a woman with 6 kids. The other night I had a dream that she came home. I told her I missed her so much and she said it back. I asked her if she was back forever and she said no but to enjoy the time we had at that moment. I was crying the entire dream trying to understand why she left and why she was leaving again. Does this mean anything?