ST. JOSEPH, Mich.—(P)—Prose cutor E. A. Westin began cross-ex amination of Mrs. Fern Patricia Dull today, seeking to penetrate the story of her love-life with William Holbrook, the man she killed last Oct. 17. Mrs. Dull, who was on the wit ness stand most of yesterday, com pleted direct examination this morning after a brief period of questioning by her attorney, H. T Dewhirst, of the House of David. Westin clashed frequently with Dewhirst as cross-examination be gan. “Isn't it a fact most of the fights you had (with Holbrook) were be cause of your jealousy of his wife and four children,” Westin de manded. “No,” the blonde secretary said. “I wasn't jealous.” Dispatch Want Ads Get Results