The particle 'わ' is often used by women to soften statements or add a feminine touch. It can also be used to express personal opinions or emotions.
私わたしは行くわ。
Watashi wa iku wa.
I'm going.
それはいいわね。
Sore wa ii wa ne.
That's nice, isn't it?
私 (watashi)
I
ね (ne)
isn't it?