First I would ask her teacher exactly what she means by “extremely absentminded” and if this is interfering with her learning? This will give you more specific information to give to your pediatrician if you choose to take it further. Also as a former therapist and school psychologist, I would want to know what your daughter gets excited about and does listen to. ADHD children have varied interests and have ability to focus on what is exciting to them but more difficulty when the material is routine or of no interest to them If there is not much that stimulates her, you might consider depression or hearing difficulties. I would start with her pedicatrician.
ADHD is an overall label for anyone who falls under the spectrum of attention deficit disorder. Many ADHD children do not display hyperactivity.