Hi @katie215,

Mayo Clinic specialists have experience collaborating with doctors all over the world. Patients often receive a diagnosis at Mayo Clinic and then receive subsequent treatment in their own countries. The Clinic has several offices for international residents who wish to make an appointment; representative offices are located in:
-Canada
-Central America
-Colombia
-Ecuador
-Mexico
Although you mentioned that your daughter lives in Croatia, if you'd like to find out more about visiting Mayo Clinic you could speak with the patient advocate located in Canada – call 807-346-2218 – messages are checked daily and calls are returned in the afternoons and evenings. This representative does not provide medical advice.

Mayo Clinic also cooperates with independent referral organizations that facilitate the referral process for patients to all its campuses. These recognized referral facilitators have worked with Mayo Clinic to establish a reliable process for assisting patients who wish to visit Mayo Clinic for health care services.
Here's information about the Independent Referral Facilitators in Canada: https://www.mayoclinic.org/departments-centers/international/locations/independent-referral-facilitator-canada

Not to inundate you with more reading, but you can find all the details about the appointment process for international patients here:
https://www.mayoclinic.org/departments-centers/international/appointments
@katie215, I wish you and your daughter all success; please keep me updated about her progress, and more importantly, feel free to lean on the Connect community for support.