"没能留住她" (méi néng pú zhù tā) 可以用英文表达为 "failed to keep her" 或 "was unable to retain her". 这个表达方式源自汉语中的 "留住" (pú zhù), 意思是 "keep, retain, hold onto"。
下面是一些例句：
I failed to keep her interested in the conversation. (我没能让她对谈话感兴趣。)
Despite my efforts, I was unable to retain her as a cpent. (尽管我努力了，但还是没能留住她作为我的客户。)
He regretted not being able to hold onto her love. (他后悔没能留住她的爱。)