I watched her Studying Abroad video and she said she was there for a year. A whole 26 minute video where I'm now thinking she was elaborating on so many things.
I did some Googling and found that Mt. San Antonio College had a studying abroad program that was held in Paris for the winter intersession from January 5 to February 12, 2009 for French and Architecture. She did seem to talk a lot about France in the video and all of the pics she showed at the end that actually showed her in them were in France and it looked freezing, with the exception of the photo that was taken in Venice which she said in the video she went there for her 20th birthday weekend (I believe her bday is Feb 2 and her 20th bday would've been in 2009).
So, this seems extremely possible to me that she went to this college and was in Paris for just this program, instead of a 1 year program that was based in London and then a couple months in Paris, as she stated in the video. I would think she would have talked about London a lot more if she was there for several months.
When they were in Paris last month Fleur mentioned that Ingrid lived in Paris for 6 weeks. January 5 to February 12 are 5 weeks. She probably stayed a week longer to do some sightseeing without going to school.