薄情寡义菇凉玩真心
[bó qíng guă yì gū liáng wán zhēn xīn]
The name combines contrasting ideas of having a heartless attitude with someone who genuinely wants to play or engage with true emotions. ‘Girl’ (菇凉 'gū liàng' here as an internet slang for 'girl') implies youthfulness and contrasts her actions. It's a self-contradicting name.