She said,"I am very happy to help you."→ 　She said that she was very happy to help you.

She said that she was very happy to help me 这个正确
间接引语 “一随主,二随宾,三不变” 这句话没提到宾语,但是你变得更合适.但是你变得更合适why因为她说， 这句话一般是对我说的。那么直接引语里的you 就是me那我也可以这样理解啊！也可以变成 我对别人说 她对我说她非常高兴能帮助我即 shetoldthat she washappy to helpme可以吗对。这道题如果是She said to me 或者 She said to Lily 之类的就严谨了。