"Don't you think that we should tell mom about this?" Anna asked in a worried tone as she stares at one of the pictures that are placed on the table.
"What are you so worried about?" Aaron asked her back instead of answering his sister's question. He does not understand why Anna is so worried about it. In his perspective, there is nothing wrong with what they are doing.
"I'm worried because mom might get angry at us when she finds out that we are doing this behind her back." Anna can already imagine the fuming face of their mother once she finds out that her children are doing something without her permission.
"Anna, don't think too much about our mother's angry face. Besides, what we're doing is for her sake anyway, so she'll understand." There is no such word, like 'might', their mother will surely get angry at them. But that anger will subside after a few days.