How to understand the role of Dora in City in the Sky?

As for Dora, although she is an old lady, except that she may not be that old, the most special thing is that she is an ambitious, energetic and intelligent old lady. I really think Dora is a good person. With the contrast between the characters' words and deeds in the development of the plot, Dora took Sida and the little boy to Lapda. When she heard Sida talking with the little boy, she sighed with relief. When everyone survived in Lapda, she hugged Sida. It really makes people feel warm and reminds me of Sophie in Hal's Moving Castle. Dora was as beautiful as a flower when she was young. What a wonderful life. The photos of Dora when she was young told me that she was full of high spirits and domineering at the most beautiful age. Over time, she became a wise and humane captain, really great, and a group of stupid sons. Although no one has a wife, animation has advantages over life, and what we see is exactly what Gong Lao wants us to see.