Analisa Analisa will be kidnapped from her shoppe - she'll just be at the wrong place at the wrong time. I believe Romilda is supposed to be there as well. She'll try and put up a fight, but she's not skilled with combat and wasn't part of the DA so she'll be overpowered easily. In the process, her shoppe will get blown up/set on fire/destroyed.
(Just to be clear - she won't be able to use her journal once she's taken, is that correct? I was planning on her trying to write for help before everything gets said and done.)