This implied doing something she would dread to be discovered in.

后面部分she would dread to be discovered in 整个是something的定语从句，可是我的困惑在于后面的定语从句的成分分析搞不懂：

1）dread在这里是及物动词吗？如果是及物动词，dread的宾语应该是 to be discovered in 还是 指代前面先行词的something的省略的关系代词that呢？

2) 为什么句末有一个介词in, 他的宾语在哪儿呢？

3）应该是她害怕事情被发现，而不是害怕她本人被发现。所以，麻烦老师详细讲解一下后面定语从句成分分析，尤其是dread的宾语和in的宾语？

    to be discovered in - 不定式被动语态吧？ 应该是something to be discovered in 吗?

4) 为什么不是 This implied doing something she would dread FOR IT to be discovered in. ?