Jackie got online and saw Mckayla looking so sad on Nanny cam . She called to talked to Mckayla and she perked up a bit hearing Jackie 's voice . Jackie then decided to drive back and join us for dinnner . I fed Mckayla her favorite yogurt before we started eating ourselves , then gave her one of her spoons to play with .
According to the above context, answer the following question.
Why would McKayla perk up ?


She had by herself all day .