I’m sure the trip separate from her family has to do with her and Lee taking a couples trip to have some alone time to themselves. Given that they broke up and gotten back together, I would assume they feel like they need time to themselves to work on the relationship. I could be giving them too much credit, but that’s what I’m guessing.
Also, unpopular opinion, but I think the choosing not to actively show one another on social media is a mature move for both of them. They broke up once after splashing each other all over the place which made them look stupid when they broke up and had to delete one another from everything. Now that they’re not showing one another off too much, if they were to break up they wouldn’t have to explain why everything was deleted.