the beighton score is used as part of the diagnostic tools to establish degree of flexibility in certain joints. 7 out of 9 would indicate that in certain joints your daughter is indeed quite flexible.
However, this scoring tool was developed as part of research projects so it is flawed in someways, as it only tests certain joints, little fingers, thumbs, knees, elbows, hands on floor for spine etc In fact you can have a diagnosis of HMS if hypermobility is found in only one joint which isnt mentioned above and as a rule this wouldnt mean that a person with only one hypermobile joint is less affected than your daughter. The key to diagnosis is clinical exam and history as well as a combination of beighton score, ruling out of other conditions etc. and the identification of other associated issues that go with the 'syndrome' part such as pain longer than 3 months, etc etc
Despite all that it is very common to use the scoring as a means of establishing clinical understanding amongst the professionals.
Hope that helps some.
HMSA SENIOR MEDICAL LIAISON OFFICER/ ADMINISTRATOR
Retired RMN, HEDS, Fibro,
eldest son, HEDS, dyspraxia, IBS, ADHD, ASD
middle son, HEDS,
youngest daughter HEDS, dyslexia