Since Jenny is not a US native, her English is hard to comprehend.
Are you having issues understanding what they are saying?
I understand but I'm struggling to comprehend.
While it makes sense that some accents are hard to understand, be careful with how you word that comment. You dont want to make it sound like you are being rude to someone who is new to learning english.
You're right. I'm going to stop being racist towards Jenny.
It's good to acknowledge how your comments may come off. Just continue to try to be understanding and helpful if you can so they don't feel like they're an outsider. They would be appreciative of your understanding.