Ya those updates take a lot of space. There was one recent update that didn't even fit in my phone and I had to delete apps just to upload the update. I wonder if she resets the phone to factory status if it would delete data that is no longer needed? I would just google the type of phone she has and how to clear old data. My iphone was acting slow and I went into the safari settings and deleted the browsing history and website data and is working like new again.