I don’t think she, or anyone, needs to have a list filled out with schools she has no interest in. If a student has no interest in a school, then it seems like a wasted application.
That said, however, I agree with the above posters who talk about the importance of being able to make a choice. It’s a very different mental space when one has “chosen” a school rather than having the decision made for you because everything else was a rejection/waitlist. Additionally, there are so many examples of students who wanted one thing in the fall of their senior year and then want something very different come the spring. Allowing enough optionality in the college list to allow for that is also very beneficial.
This is sometimes why it can be hard to find extremely likely admits for a student, but that doesn’t mean the effort should not be made. If your family would like help brainstorming possibilities, you could start a Match me thread for your D, or you could share the budget, your state, and a bit about your D and what she’s interested in. I’m sure that there are folks here who would love to help brainstorm possibilities to research.