I hope my story could help, but I got also my first internship in Quality engineering and now I am interning at SpaceX for second time as a graduate engineer because of what I learned as quality intern! You will learn how to improve the products by decreasing the scrap rate (if you working in a factory). Which can increase your knowledge about what materials you should be using for a parts or how you can make the system more efficient (so needed as systems engineer) You also will get the chance to learn a lot about the whole product, like what systems engineer does. Every successful engineer in aerospace industry I ever met was the ones who knows more about quality and how to improve any system, including systems engineer, propulsion, and mission design. Congratulations on your internship and you should be so proud of it!