Dream interpretation: dreamed that my daughter died and then came to visit me at night, what could that mean?

I dreamed that my daughter (4) had died. Of course, the pain was immense. When I went into the basement, where her things (furniture and toys) were kept, in my dream some time after the event, she was hiding under her bed and calling, "Hello, Mommy." (She laughed, just like during our hide-and-seek games.) I held her in my arms and cried with happiness, and we played and cuddled.
I experienced it every night after that, at the same time (it felt like between midnight and 3 am), but as soon as the time had passed, she was suddenly gone. (We played and cuddled, and I rocked her to sleep at the end.) Before I woke up, I rocked her to sleep, and when the time with her was up, I suddenly had a black cat in my arms. I looked in a mirror, and in it, I had the cat in my arms, and when I looked down at myself, I also had the cat instead of my daughter. (Different from the previous dreamed days/so several days in one dream)

This dream brought me very confusing and disturbing emotions, as well as many other emotions.