in a technical sense, anyway. she "occupies" a thought-malleable demiplane, generally referred to as the Beanbag (more lore there but tldr "because beanbags are comfy"), which she can enter and exit at will (and also invite others into). but, the form she appears in is really just an avatar made of the same think-it-real as the geography of the Beanbag; at a deeper level, they are both extensions of the same consciousness.
she also sometimes manifests avatars directly within other universes, and may even give them full autonomy and ignorance of their extended nature, but their experiences are shared back and she can re-occupy them if it seems like fun. you can meet Akhra in any reality, and she is always the same Akhra, whether or not she knows it at the time.
even if an avatar is locally destroyed, it could just be remade, so she cannot permanently die in any universe... except this one, since that fundamental consciousness from which she springs is mine. (which is not just me waxing philosophical, her fictional self also canonically knows this because there was fun to be had with that dynamic.) so yeah tldr if I got isekai'd down one level? pretty much godhood, fuck yes 
