Lyric discussion by Armor 

Cover art for How Would I Know lyrics by Melissa Etheridge

I think she's like asking her lover what she means about some things that she says to her like saying to her "what am i doing here" it's like she's almost wondering why she's saying those kind of things to her,and she's like asking her " how would she know" if she doesn't tell her like if she wanted to leave the relationship or something.