Find Rubor's grandson

I have a Problem with the quest mentioned above!
Instead of giving the inkeeper 150 gold i said he can have the boy.
Now the Quest is still active but i cant talk to to the boy on the backside of the inn ( door locked).
When i talk to his mother i just can tell her that ill look for her boy (she dont tell me that rubor is in jail). I tried to go into the jail without having the quest but i cant open the door to rubors cell(even if i use strong unluck). Please help me, it makes me crazy if i cant complete a quest
. Thanks.
Instead of giving the inkeeper 150 gold i said he can have the boy.
Now the Quest is still active but i cant talk to to the boy on the backside of the inn ( door locked).
When i talk to his mother i just can tell her that ill look for her boy (she dont tell me that rubor is in jail). I tried to go into the jail without having the quest but i cant open the door to rubors cell(even if i use strong unluck). Please help me, it makes me crazy if i cant complete a quest
