I have an unusual question... My girlfriend is Thai, and received a Schengen tourist visa for 44 days from the Spanish Embassy in Thailand based on our travel plans at that time. We are in Prague now, and would like to extend our trip by one week (7 days) if possible. Is that something that can be done through the Spanish embassy in Prague? By the Czech immigration office? I see that it is possible to extend this type of of visa in other countries, but the information online is very vague.

I have some Czech friends attempting to contact the Spanish Embassy and Czech immigration office tomorrow, but was wondering if anyone here had experience with this in the past.