Her

1. A pronoun (mostly used for women, can be used on anybody who uses those pronouns)

2. A word used for your partner ("my girl" is another word for that) who is a woman

1.

"Yoo I love Selena Gomez"
"I like her too"

2.
"Her dress is so beautiful"
"IDC"
"Im talking about my girlfriend dude.."
"I know."