S1·E5 Back to My Original Self! What Should I Do?

The anime Mirage Saga is hosting a Valentine's event, and Kae decides to make a chocolate for Shun for the event. As Kae fusses over what chocolate to make in order to perfectly capture Shion's beauty, Nishina suggests Kae try making a 3-D chocolate sculpture. Kae agrees, and throws herself into making one, but is unable to improve in her ability to sculpt the chocolate at all. Nishina can't bear to see Kae saddened by her situation, so suggests Kae use the chocolate she made instead. What will Kae decide to do?