Mourning in a dream is read as the work of letting go — of a person, a hope or a version of yourself. Dream books treat it as a healthy process, the mind making room for what loss has left behind.
Where in your waking life have you met something like this lately?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.