Following the Lancastrian defeat in the battle of Barnet the remaining Lancastrian forces were now led by Henry's Queen, Margaret d'Anjou, and her seventeen-year-old son, Edward of Westminster Prince of Wales. Had Margaret, landing in England to the shocking news of Warwick's final defeat, been able to join forces with her ally, Jasper Tudor (uncle of Henry Tudor), she might have stood a chance against the Yorkist forces of King Edward.
WI Margaret was quick enough to join her forces with Tudor's and face Edward IV? Tudor was an experienced commander and could be a match to the skills of Edward IV... Could the combined forces of Margaret and Jasper win the Crown for the House of Lancaster and raise Prince Edward to the throne? (Henry VI was too feeble and insane by that time so i guess that in the event of a Lancastrian victory he would quiet abdicate in favour of his son...)