Galadriel's intentions.

[Lathriel]

As I was reading this thread I also got an idea. What if Galadriel looked in their thoughts in order to make them realize what they actually wanted to do. She put before them the things that they didn't want to see or didn't want to think about. For example Sam really wanted to go home but he didn't want to leave Frodo. He didn't think about going home because that would make him feel extremely guilty.
Thus she also awakened Borormir's longning for the ring. He probabaly already wanted the ring but he kept those thoughts deep within himself because he didn't want to be seen as weak or as a danger to the company.