how did hiding a Jew demonstrat the them of isolation and acceptance for liesel

How did hiding a Jew demonstrate the theme of isolation and acceptance in the novel for Liesel I need help with about a paragraph response. The response is based on the theme of isolation and acceptance... how did hiding a Jew cause liesel to isolate her self ? It be help full if I had specific quotes so I can find them in the book. This is based on events that happened in the whole book