It's like she's suspended in space.
It seems as if she’s floating in space.

She seems to hang in air/space

It’s like she hovers/hangs in the air.

у меня почти такой же, как у grumbler-
She seems to hang out in space.

In space для меня звучит как «в космосе»🧐

Похоже) но висит в воздухе тоже не очень.
Как правильно сказать пространство?

Надо думать над тем, чтобы по-английски звучало «очень»:))

What does that mean? What's actually going on with her?

This is about a grand jetè in ballet.

I just gathered that when I saw the next post! hahaha Thank you!

She looks like hanging in the air
It looks like she's hanging in the air

HANGING isn’t the best of words here. When you’re talking about something like a certain gloom hanging in the air in a certain situation, it sounds OK. But when you’re talking about a person or thing, it’s better to use SUSPENDED.