英文不定詞用法的填充式翻譯問題?

I begged for Mary to stay for another week.
不定詞記得有邏輯的主詞，to stay 邏輯的主詞是Mary，還原本句為I begged for Mary that Mary stayed for another week.

而I begged for Mary to let her stay for another week.還原本句為I begged for Mary that Mary let her stay for another week.請問 her 是誰？語意不明-----

我【向】瑪力求情，【請】她再停留一個星期
I begged Mary to stay for another week.

請問 Cat 下句通嗎？
我【替】瑪力求情，【讓】她再停留一個星期
I begged for Mary to let her stay for another week.

2011-02-19 23:02:58 補充：
http://pleasesendparentingbooks.blogspot.com/2009/12/28-weeks-and-1-day-at-time.html

I will tell you what I prayed every moment of the last 48 hours as I listened to his little heart beat strong on the monitor. I prayed for each new day that God will grant us for this little one to grow inside me.

2011-02-19 23:03:17 補充：
為了兒子， 向上帝求情：
I begged for my son to have a fair chance at life, a healthy life filled with all of the things you would want for your child - a mind, body and spirit fully cultivated and ready for this world.

所以下句是通順的：
我【替】瑪力求情，【讓】她再停留一個星期
I begged for Mary to let her stay for another week.

2011-02-19 23:12:36 補充：
I begged for Mary to let her stay for another week. 這一句裡的 her 很明確的是指 Mary ，並無語意不明-----

您好，上述提供的句型其實不是很正確，正確寫法是

I begged Mary to stay for another week.

意思是：我懇求瑪莉再多留一星期。

如果是要描述 ''替瑪莉求情''，那麼應該指出 "對誰求情" 才是完整且正確的句子。有時候英文不能直接從中文翻譯，否則就成了所謂的 ''台灣英文''。

I begged Mary's father to let her stay for another week.

I begged Mary's father to allow her stay for another week.

上述兩句意指：我替瑪莉向他父親求情，讓瑪莉再多留一星期。

希望對你有所幫助。