Changes In John Whyndham's 'The Chrysalids'

In John Whyndham’s The Chrysalids David realizes in life, adapting to changes are often necessary. To begin, “You mean, right away? Never came back?” I asked in dismay.
“Yes I think so.”
I had been hungry, but I suddenly lost my appetite…
“Where?” I asked, unhappily.
“I don’t know- a long way, though,” she told me. (pg.46)
In this quote David loses his best friend she has to move due to a problem about someone finding out about her sixth toe. This means David has to now adjust without her there. It is going to be hard for David because she is the only friend he has in town and he likes her also. Having one friend in town and having them leave is going to be difficult for David, he now has to learn how to restyle without his best friend