In the world of dreams the rules of reality do not necessarily apply. Each dream is unique and it's a direct link to the soul and spirit. Psychology provides its own theories on what dreams mean, but so did tradition and the study of dreams for thousands of years before any relevant science had developed.
Dream Meanings - Ink
If you see ink being spilt then be careful as mistakes could create problems, but if you simply see ink then you will be reconciled with someone with whom you have argued.