1: 1. Donna's unwavering loyalty 2. Emotional connections with characters 3. Fans' excitement for her return

2: 1. Donna's witty remarks 2. Chemistry with Harvey 3. Symbol of female empowerment

3: 1. Impact on the show's dynamics 2. Emotional depth of storyline 3. Resonates with viewers' emotions

4: 1. Character growth and development 2. Nostalgia for longtime fans 3. Donna's strong presence on screen

5: 1. Donna's iconic fashion sense 2. Humorous moments she brings 3. Fans rooting for her happiness

6: 1. Donna's importance to the show 2. Emotional rollercoaster of her return 3. Unexpected twists in her storyline

7: 1. Donna's undeniable charm 2. Relationship dynamics with other characters 3. Fans' emotional investment in her journey

8: 1. Donna's impact on viewers 2. Themes of love and friendship 3. Emotional reactions to her return

9: 1. Donna's memorable quotes 2. Significance of her character 3. Reasons why Donna's return is heartwarming