The kanji in the picture can mean "sky" or "empty". From the context, I'd go with "sky".

Or, It's the Kanji for Utsuho.

Megamet said:
Or, It's the Kanji for Utsuho.

The kanji is part of her name, but used by itself it means "Empty Air" or "Sky". Translation added.

It's not part of her name, it is her name.

thus we can conduct that her name means Empty Air or Sky.

Truly fascinating.