Louisa's jump from the Cobb steps displays a willfullness on her part. But does her unyielding spirit reflect her true personality, or is she tyring to mold herself into what Captain Wentworth has described as an ideal?
In Chapter 10, she says "...I have no idea of being so easily persuaded" before he makes his speech about being firm in decisions, so I do believe she is used to doing what she wants. But I find it interesting that her behavior becomes more overt after the Captain's speech in the hedge-row.
In Chapter 11, it says that she is "being now armed with the idea of merit in maintaining her own way" which fuels her insistence that they go to Lyme immediately, rather than wait until the summer as her parents suggested. I wonder if she would have been so determined had CW not told her that he prefers firm-minded women and her interpretation of that.
Am I off in thinking Louisa is indeed a little persuadable? Maybe not in the same sense as Anne, but that she wants to be the type of woman the man she's attracted to claims to prefer?