Scenario $7\mathrm{.}3.$Jiao just got the news that she got passed over for a job she wanted. Now she is at a shopping center looking for a gift for her best friend's birthday. She is in a bad mood and does not want to be there. It's the holiday season, so the store is very crowded. After searching for a long time at a jewelry store, she finally finds the necklace her friend wanted. Jiao thinks the necklace is too expensive and is not even that attractive, but she buys it because she knows her best friend likes it$.$Refer to Scenario $7\mathrm{.}3.$ Which situational factor most contributed to Jiao's purchase?