Molly Tilden is the next door neighbor to the Conner Family in Season 5, appearing in seven episodes in total. The part of Molly is played by actress Danielle Harris.
Since Molly comes from rural Iowa and flirts frequently, Darlene often mocked her as a hillbilly country girl, despite Molly's initial attempts to be friendly with her. This is reinforced when Darlene catches D.J. watching Molly (who is undressing in front of an open window) with his telescope; when Molly comes over to complain about his peeping, Darlene gives her an earful, despite promising to deal with D.J. In spite of this, Molly babysits for D.J. several times.
Molly's older sister, Charlotte, is also seen frequently in Season 5. She is a timid and sometimes ditzy personality who talks in a rather mechanical fashion, but she has a passion for cooking and baking, and posesses a sweet nature. Roseanne enjoys having Charlotte as a guest much more than Molly, who tends to treat her older sister as a 'doormat'.
According to Darlene, Molly sleeps with any guy that gives her attention; Darlene amusedly notes a parallel of Molly and her heavyset older sister to Jackie and Roseanne. She was an on-and-off friend to Darlene until things went wrong when the girls went to a concert and Molly chose to drink and smoke pot with some guys instead of taking Darlene home; this resulted in Roseanne giving her a threatening ultimatum. However, the main reason Darlene disliked Molly was that she often flirted with David; David initially seemed attracted to her, but he later firmly maintained that he was comitted to his relationship with Darlene when Molly came onto him.
Frustrated, Molly kissed him, which was unfortunately seen by DJ; when Darlene found out, she almost broke up with David despite him not actually being at fault. However, by the end of the episode they had forgiven one another; She has not been seen since as she along with the rest of her family seemingly disappear after Season 5 without explanation.