If anyone out there has any experience with filing returns in Puerto Rico, I could really use some help!

I am helping a friend who is a PR resident do her taxes for the first time ever, she's a recent college grad. I did her US Federal and State returns just fine, but I am having a lot of trouble with PR. She has some wage income from PR, wage income from the US, and 1099s from the US. From what I gather, she needs to declare all her income in PR, and then take a credit for taxes paid in the US?

I am using the software PR Soft but I am having a lot of trouble navigating it, particularly in inputing her US income. Any tips or advice would be greatly appreciated!!