If you have dreamed of your sister getting angry in your dream: A holiday plan you want with the person you love can come into play. It is useful to ask for time before you start making changes. If your sister gets angry in a dream, it indicates that the arguments between siblings in real life take place in the subconscious and this situation causes discomfort. Seeing your elder sister getting angry is also considered as a sign of minor arguments, upsetting the peace, and depressed mood. This indicates that the person will go through a difficult process both financially and morally.