The name "妖妖靈" is a pseudonym or screen name, and it's meaning can be interpreted in a variety of ways. As the name is derived from Chinese characters, it is likely that the person behind the name chose it for its cultural significance and symbolism.
"妖" can mean "mysterious," "enchanted," or "bewitching." "靈" can mean "spirit" or "soul." Together, the name could suggest a mysterious and enchanted spirit.
It's also possible that the person behind the name chose it for its sound or the way it looks in writing, as many people choose screen names for personal or aesthetic reasons.
It's important to keep in mind that the true meaning behind a screen name can only be known by the person who chose it. If you are curious, you may consider asking your friend directly what inspired them to choose this name.