She was screaming. It seemed like she suddenly realised that there are three weeks left and she needs to make her presence felt so scream.
Surbhi was right in taking away single mattresses and keeping double ones. Two people could share a double bed.
Dipika had a back ache, which she mysteriously forgot about when she started running towards Shoaib. That was her excuse for wanting her mattress.
In this situation, Surbhi had to think about everyone, and sharing double beds was the best solution. She didn't want to share a bed, she was okay with giving up her mattress (reluctantly), but didn't want to share a bed, that's what it seemed to me.