You absolutely can't listen to what your mom says.
But you can absolutely validate your product with what your mom does.
Does she use it everyday? Does she complain about this feature or that feature? When you're standing behind her when she opens up the application, does she stare at it blankly for five minutes before clicking on something that crashes it? How many questions did she ask you about how to use it? How easy was it for her to learn to use?
All of this is infinitely valuable mom-feedback. Nobody embodies your userbase better than your mom, so you better be testing it on her.