If you have enough reason to wonder if she has ADHD or not then it’s worth getting an assessment done or talking to her PCP

Yeah if you have a suspicion go to a professional like @100Percent_K said. Do keep in mind though that ADHD can present differently by gender. Also think back of examples you can share.

A formal assessment is the best way to determine if your child has ADHD. There are so many symptoms, so many types of ADHD, and it can take very different forms and look very different from person to person. If you’re still unsure if you want to get an assessment, talk to your child’s teacher (assuming they have a good teacher). How they act in school may be different from how they act at home.

Sudden mood changes, like out of nowhere. They are forgetfull, and not a bit, like alot of forgetness. Hyperfocus, where the brain will only focus on one thing and ignore everything else, or Hyperactivity, where the brain forces the body to become hyper our of the blue. There is more, but searching ADHD on Google gives you all of the symptoms.