After Lucy used Lingling as her pen name/pseudonym,she became famous.
Lucy became famous,after she took Lingling as her pen name/pseudonym.那上面这句有误吗？出名是在用了Lingling之后，所以不能用and连接，如果换成then（然后）就好些了，但还是没有体现出笔名。我给你改成：Lucy took the name lingling as pen name/pseudonym, then (she) began very famous.