Based on the trailer for the second part of Season 4, it seems that Emily is going to be dealing with the fallout from her decision to stay with Gabriel. She is also going to be trying to navigate her new relationship with Gabriel while also trying to keep her job at Savoir. In addition, the trailer shows that Emily will be exploring the city of Paris more and meeting new people.

The trailer starts with Emily and Gabriel kissing passionately. This suggests that their relationship is still going strong. However, the trailer also shows Emily looking worried and stressed. This could mean that she is starting to have doubts about her decision to stay with Gabriel.

The trailer also shows Emily working hard at Savoir. This suggests that she is still committed to her career. However, the trailer also shows Emily getting into a confrontation with her boss, Sylvie. This could mean that Emily is going to be facing some challenges at work.

In addition to dealing with her personal and professional life, the trailer also shows Emily exploring the city of Paris more. She is seen meeting new people and going to new places. This suggests that Emily is going to be embracing her new life in Paris.

Overall, the trailer for the second part of Season 4 of Emily in Paris suggests that Emily is going to be facing a lot of challenges in the upcoming episodes. However, it also suggests that Emily is going to be growing and evolving as a person.