Even though she tried to clear the air back then, people still have continued to assume that they’re related anyway. On Twitter, Gaten’s actual mother refers to herself as a “Broadway stage mom, a soccer/basketball mom, and the mom of a just-about-to-drive teenager!” She describes her kids as being her joy.
At the end of the day, actress Heather has done her best to clear up any confusion fans might have about her being related to Gaten.
Source: https://www.distractify.com/p/is-gaten-matarazzo-related-to-heather-matarazzo