How much do I️ pay her for cleaning my house?

So I️ broke down and hired my friend to help me clean my house because right now it’s just was to much. It’s 3 bedroom with 3 walk in closets. I️ got most of my kitchen clean but I️m trying to get rid of my husbands grandparents things and have just made a huge mess of things. Idk how much I️ should pay her. She said to pay her whatever I️ feel but I️ don’t want to low ball her.