Gheg vs. Tosk: Which should I focus on for my Albanian grandma?

I’m a heritage learner trying to reconnect with my family by learning the language, but I’m confused because my grandmother speaks a very strong northern Gheg dialect while my online apps strictly teach standard Tosk Albanian. I don’t want to sound like a textbook when I’m talking to her, but I also don't want to learn 'incorrect' grammar for formal settings. Any advice on how to balance standard Albanian with local dialect familiarity so I don't offend her or sound like a stranger?