Yes, your description is indeed consistent with Sjogren syndrome. Blood tests called anti SSA & anti SSB can be useful. Sometimes, biopsy of the inner aspect of the lips is done but does not appear necessary in this case. There is no cure but she can be definitely helped with certain medications like hydroxychloroquine, artificial saliva and artificial tears. Non steroidal anti inflammatory drugs may also be used. She needs regular monitoring and in case of any further complications, some other medications can be used. There is a higher chance of certain malignancies like lymphoma occurring in such patients.