Kanojo wa ore ga Nihon ni ikimasu to iimashita.→ Kanojo wa ore ga Nihon ni iku to iimashita - She said to me I(Utsuo) am going to go to Japan. Kanojo wa Nihon ni iku to iimashita. - She said to me she is going to go to Japan. ※ore（おれ／俺）is a rough/curt/brusque/rude/impolite word means "I/me". It is used by male.

Another possibility is; She said to me to go to Japan - Kanojo wa ore ni Nihon ni ikuyouni to iimashita If she suggested you to go.

Domo arigatou Japanese Specialist and Chikage. Kanojo wa ore ni Nihon ni ikuyouni to iimashita This is more like what I wanted to say.