Loyalty vs. Opportunity

My aunt helped me get a job at her dental office, I work 40 hours a week, and I’m taking 15 units at school, so I’m falling wayyyyy behind.

I got offered a new job that’s part time and it pays more, and I’d be an assistant manager rather than just cold calling all day. I know in every sense it’s a better opportunity for school and my health, but I don’t know what to do because I don’t want her to look bad, and I was supposed to be here until January, but it’s not working out. Any advice would be heavily appreciated! ❤️❤️❤️