A question

Don't know if it's a good one, but something that I thought a lot about.
Even though I knew Charlotte would marry Mr. Collins because I've seen both movies, I don't think either movie depicted it to be such a calculated act on her part. What do you think of the whole situation? Should she have made her intentions known to Elizabeth from the beginning, instead of letting her friend think she was just trying to give her a break from him? Does anyone else think she's as nuts as I do for marrying him? =)