Step 1: This question relates to the poem "Thinner Than a Crescent," which is adapted from the poetry of Vidyapati.
Step 2: The poem describes Radha's emotional and physical state due to her separation from her beloved, Lord Krishna.
Step 3: Radha is deeply hurt and confused by Krishna's absence. Her friends cannot understand her pain, and their attempts to console her fail. This inability to make others understand her deep sorrow, combined with her longing, creates a state of intense 'frustration'. Her condition is beyond simple sadness; it is a frustrating state of being emotionally isolated and helpless.