You have to first "sleep until day" option. Make sure that bandits are not hostile as they will continue to wake you up at night which will not continue the event.
Well first you have to find him and save him in Viccoria's dungeon, then your just have to complete his quest and the "weening the calfs" quest (which you can find in the talk option when at Ste's house), which then you can start the event by sleeping until day at your house. Which should help you, hopefully.