Verb conjugation of "aufbessern" in German

My daugther was crying all night and we did not know why. We assume that she is getting into the terrible two age and wants to give us a hard time. We love her so much and do not get upset by that.
I just saw the Arsenal match. It was very boring and the atmosphere in the stadium was weak. I think that it was mainly due to the cold and not due to the quality of the game. But it was worth it.
She could not join me since her flight to Israel was supposed to leave in less than 48 hours. I helped her carrying the bag to a hostel in Cancun and we went together to the airport. I postponed my flight again.