The death of Frederick III in 1337 sparked the explosion of Sicilian tensions, created from the confluence of strain of political uncertainty, a bad economy, and unstable power imbalance between the divided feudal class. The death of her father-in-law began the solo reign of Peter II as King of Sicily. As it was easy to influence Peter II, Sicily would have been much more negatively impacted by his reign if it were not for Elizabeth. In the struggles between the feuding groups, Elizabeth sided with the Palizzi, who won the favour of the king over Chiaramonte. Further from their home in Messina, the Aragonese interest warred the Angevins warred in Greece. With her mother-in-law, Eleanora of Naples, Elizabeth worked to support mediation and reconciliation between the two feuding houses. Although very limited in actual power, Elizabeth used her influences to impact the governance of Sicily.