not really sure if this helps, but myself and immediate family have traits of a CTD called 'Marfans' my dad and my brothers have had their hearts and eyes tests as it affects the heart and retinas, i slipped through somehow and havent been tested. but we all deffinantly have the traits. things like 'double joints', hyper extensive joints, stretch marks, eye problems, my brother actually has a 30cm difference between his height and his wingspan (his arms are longer than they should be) so much so that he has to get longsleved tops and suits customly made cause normal sleeves go to just below his elbow.
Im not sure how it came about...i think my dads gp discovered it and then the tests etc went from there... im a little dirty i never got tested...i think it was something about me being a chick instead of male...but i dont know, i do know i have the stretchmarks, the hyper extention, i can dislocate my shoulder and pop it back in whenever i want, and the bad eyes...

sorry, this doesnt really help you, maybe ask her if she has been offically diagnosed or if it just the traights are there.