[Vianova]

In Beelzebub's Tales to His Grandson
[Gurdjieff]
this is called delusions of grandeur.

In modern western psych hospitals
this is called an hallucinogenic episode.

In Zen visions, it is known as lucid dreaming,
but in your case I don't think so.

Angel visitations are usually more upscale,
and contain a distinct message or directive.

"interdimensional bleed through" ---IBT---
as one poster suggested, has it's possibilities,
and thankfully your story indicates
a benevolent vision.
IBT is thus a bonafide alien presence.

We are the Angels
of our future.