Read the following context and answer the question.
Context: 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 .
Question: Why would McKayla perk up ?
Answer:


She had been alone all day .