What does it mean to transcend?

Brief background:

I'm in a tough spot, but I remain hopeful. I'm not sleeping much, and when I do, the sleep quality is terrible.

Ten days ago, I stayed at a friend's place, and I slept quite amazingly. And I had a vivid dream, so I woke up crying because I was feeling in my body the emotions of the dream.

I will write a book about this dream because it was incredibly rich. Basically, in the dream, my best friend came to me after years of not seeing her. She was emotionally distant and handed me a box with memories (bits and bobs of our friendship) and told me that she had to go to a place from which she wouldn't be able to return, so she wanted to see me for the last time.

Of course, I was really emotional and worried, but she reassured me that she had chosen to go there willingly.

I really won't spoil more, but in the dream, I waited ten years until my dog passed, then followed my friend to the place she left to.

I shared this dream with my cousin, who is highly sensitive and she gave me the chills.

She said: your friends is not human and you're ready to move.

I left the whole thing right there, only thinking about the plot for the story.

Two nights ago, I fell asleep asking whoever-whatever's “up there” to show me the way, to be straightforward. I barely slept that night, so after breakfast, I accidentally fell asleep.

In this short nap, I had a vivid, almost lucid dream, and I also woke up crying, although this time I was extremely upset.

In this dream, I was dead, and I was really cool with it. I was floating in my spirit mass, roaming outside planet Earth, slowly “ascending”, until I realised that my dog was still on Earth, and that I hadn't yet started to LIVE life with her, to ENJOY her the way we both deserved. That's when I stopped being okay with my death.

I tried “swimming back” but a portal above me opened and a voice inside my spirit's head said that it was time for me to leave, to which I replied that no, I had to ENJOY LIFE with my dog before I was ready to join. I couldn't leave her there alone.

This voice said the most cruel thing I ever heard: “Annie's not real, she's part of the simulation”.

And here's when the hopelessness and rage and heartbreak took over me. I tried to explain that everything and everyone else could perfectly be a simulation, but not Annie, cause “I couldn't have made up such a soul, such a connection, such love, such perfection; she's real and I need to go back to her.”

I truly woke up upset that the voice wouldn't understand the difference between Annie and the “simulation”.

Later that night, I shared this dream with a friend. And she said:

“You are being called to transcend.”

Her words made sense just as much as my cousin's did. But none of them could explain what “ready to move” or “transcend” meant.

Neither can I, who literally feel like I no longer understand anything, and it's probably the first time in my life that I've lost all interest in “mystery”. I just need clear answers.