Welcome to HCM
What health record you are talking is X ray
report it is not size which matters in such cases as she has suffered Toberculosis 11 year back hazy spot will remain there.
It is more important to know was she completely treated and she took complete treatment and on follow up declared free from disease.
If otherwise health is normal no fever
,weightloss then she is fit and there is no risk.
It would be better if you can see a local chest physician and take opinion.
Hope this will help you.