The Dying of the Light

This poem can be interpreted in many ways however those that I intended are as follows;
A) Someone dying and their loved ones trying to cope.
B) The struggles of those with dementia.
C) Watching a past love from afar, knowing that you can no longer be with them.
D) Bullying.
E) The 'second wave' of depression, after the person who helped you is no longer there.