My daughter is planning to study with North Carolina State University in Prague this coming Spring semester. They plan the semester so it is exactly 90 days, which uses up her entire Schengen Visa for 180 days. They do not require or ask for students to get a student visa.

We would like to visit her at the end of her studies and take her with us for a couple of weeks around Europe. How does she apply for a visa extension? Is it easy to get?

We also considered visiting Croatia, but we would have to fly her back through Germany. Is this a problem? It might be on her 91st day. Would she have to get a transit visa?

Any advice is appreciated. Thank you!