I looked up the dedication in the linked note at Pemberley and found this information.

"In 1782 and 1784, plays were staged by the Austen family at Steventon rectory, and in 1787-1788 more elaborate productions were put on there under the influence of Jane's sophisticated grown-up cousin Eliza de Feuillide (to whom Love and Freindship is dedicated). This throws an interesting light on Jane Austen's apparent disapproval of such amateur theatricals in her novel Mansfield Park (though Mansfield Park was written over twenty years afterwards, in a moral climate closer to the Victorian era; also, in 1788 one Charlotte Anne Frances Wattell eloped to Scotland with a son of the scandal-plagued Twistleton family, remotely connected by marriage with Jane Austen's family -- Mr. Twistleton and Miss Wattell had been acting together in amateur theatricals; see Tucker, p.152)."