[Ellen]

Becky was already friendly with Deana when BB gave her that task, after the task Becky did not drop Deana, she was quite upset that Deana was upset. Deana told Becky in front of other housemates that she wasnt sure about been friends with her because she wasnt sure of the friendship anymore. Becky made friends elsewhere after that. She did not just drop her, she tried to make amends.
I'd be quite happy to have a pop at Becky if she was at fault but in this case i dont think she is.