迩送她回家卻忘了莪也怕黑
[ĕr sòng tā huí jiā què wàng le é yĕ pà hēi]
The nickname means 'You take her home, but forget I am afraid of the dark'. Here '迩'(er), short for 'you', and '莪'(wo) stands for 'me' which gives the feeling more emotional and private. It may convey that she was envious of the girl who was sent home.