I understand that you may be looking for some girls' screen names with indifference or ruthlessness. Here are some examples that may meet your requirements:

Bingxinshang

Desperate queen

Heart like frost

Cold-blooded princess

Heart of rock

be iron-hearted

Cold messenger

Broken ice is biting

Leng Yue dance

Xue Mei Yao Ji

Please note that these screen names are just imaginary character combinations. If you use them as screen names, you need to consider the impression and understanding they may bring. Sometimes a screen name that is too cold or heartless may leave an unfriendly impression on others. When choosing a screen name, it is suggested to balance personality and friendliness to ensure that you convey the image you really want to express.