OTOH, my DS7 has a WM of about 120 if memory serves (?), a PS of 109, and a GAI of 150+. Combined all that with his personality and age, and it means he is a "deep but not fast" kid. I see it every day. Everything takes longer and he needs to write things down and look at them because he can't keep them in his mind without losing where he is. Everything takes longer than it seems like it should.
I think his scores are accurate on WM and PS--if not too high!--and I can clearly see that they constitute a stumbling block for him. It's minor because we're homeschooling and I can adapt his schoolwork to play to his strengths and strengthen his weaknesses. He's definitely a lot better this year than he was last. But mental math isn't easy for him.
I guess my big question is do you see memory issues with your child? Do you think the scores make sense based on what you know of your daughter?
Mistakes do happen! A test is just a snapshot of one day, not the be-all end-all of defining your child. if it doesn't feel right, then the scores may not be right.
But if the scores make sense to you, feel explanatory to you, then I think you probably want to take that into account as you plan for your DD's education.