If she's asked to make her bed and brush her teeth, she forgets at least one of those tasks. We are tired of constantly scolding and reminding her. There probably are few parents who have not lamented their child's so-called forgetfulness at one time or another. There could be many reasons for your daughter's behavior, most of them not cause for serious concern. She may still be sleepy in the morning and just not feeling sharp enough to stay focused on all of those morning tasks.
Kids sometimes have much more important things to think about than making beds and brushing teeth.
Whatever the underlying cause of your daughter's behavior, this is a good opportunity to help her learn to be more responsible. You've already figured out that constant scolding and reminding are not helpful. The challenge is to find ways to let her be in charge of her morning routine and for you to stay as uninvolved as you can. For some kids it helps to make a checklist of morning tasks and tape it on the bedroom door. Also, don't forget to catch your daughter being good.