TD extension problem

My friend's TD visa I-94 card will expire by the end of April, 2012. She holds China passport. Her hu*****and holds Canada passport and valid TN visa to Oct 2014.
1. Can she apply TD visa extension on line by themself?
2. or what is the proper procedure? Where to apply extension?
3. If she can not get the new approval before her I-94 exprie, is she legal to stay in USA? How long?

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回复:TD extension problem -pjiang- 给 pjiang 发送悄悄话 pjiang 的博客首页 (1200 bytes) () 02/07/2012 postreply 10:08:16

能问一下您朋友的TD签证是如何办理的吗? -大写2- 给 大写2 发送悄悄话 (197 bytes) () 02/07/2012 postreply 10:38:40

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