@Rebel against the harem I wonder why everyone is so harsh on the mother
She's by far the one suffering the most besides Ria from this whole situation, of course she's sceptical after so many people tried to trick their family with fake daughters and now it seems to her that her family is forgetting about her daughter and try to replace her with Ria, so I can relate her taking such a causious position
Also when it's undoubtly proven that Ria is her real daughter, she suffers from regret that she treated her so harshly and that she also have to make up for it as well as losing her when she was a child
Give the mother a brake