If you don't have a tightly scripted role in the campaign (assuming it's still even going on), you could try to adjust the character's personality and tactics. The circumstances that brought it into being have changed. It only makes sense for the character to change with them.
![Fml | MY SISTER; MY DAD (DUNGEON MASTER); ME (I HAD A DIFFERENT IDEA BUT NOBODY WOULD LISTEN TO ME, SO NOW I’M STUCK IN A CAMPAIGN I ACTIVELY DESPISE); MY MOTHER HAPPY THAT WE’RE ALL “HAPPY” (SHE HEARS WHAT SHE WANTS TO HEAR); THE IDEA MY SISTER SHOUTED LOUDER THAN EVERYONE ELSE (SHE’S CLEARLY THE FAVORITE [THIS DECISION CHANGES THE CAMPAIGN IRREPARABLY {I TRIED TO TELL HER THIS BUT SHE WOULDN’T LISTEN}]) | image tagged in knights of the round table,true story,fml,dnd,sadness,withered wojack | made w/ Imgflip meme maker](http://i.imgflip.com/7nawd6.jpg)