彼女, かのじょ
Pronoun, See 彼・かれ・1
1. she, her
See 彼氏・1
2. girlfriend
僕の彼女はカナダへいってしまった。
を
Particle
1. indicates direct object of action
2. indicates subject of causative expression
3. indicates an area traversed
4. indicates time (period) over which action takes place
5. indicates point of departure or separation of action