Returning to Tehran gets Marjane her parents back… at the expense of her personal liberty and the freedom to show off her hair and ankles. Showing off her hairy ankles? Forget about it.
Marjane is overwhelmed to be back. She's also excited that her parents are talking to her as though she's an adult, their equal, for the first time.
When she realizes just how much the Iranians have suffered over the last few years, she feels great shame over her life in Vienna. "My Viennese misadventures seemed like little anecdotes of no importance" (29.78), she says.
She decides to never tell them what she went through there.