Didn't want to ask for time off and grovel for extra days. Hmm. Well, if you can get work that lets you avoid that...good on you.
But most of the time, you have to coordinate with someone else.
Did she make that much as a "20-something publicist" to be able to buy airplane tickets to Guatemala and Bali, which aren't cheap, and all that goes with it? She may have. But it sure does sound like she has a sugar daddy.
She may be able to afford those things on her salary. Healthcare, retirement, savings, investments. No way can she fund exotic travel working part time and paying rent on Kauai. The cheapest apartment is $1550 a month, and your food cost are the highest in the country.