The Estonian Foreign Ministry said Marina Kaljurand has resumed normal duties after what was officially described as a holiday.
Relations between Russia and Estonia, a European Union member since 2004, hit a new low-point after Estonian authorities dismantled a Soviet-era war monument and disinterred the remains of soldiers ahead of Victory Day, which is marked on May 9 in Russia.
The Estonian government considered the Bronze Soldier monument a reminder of 50 years of Soviet occupation. The move sparked furious protests in Tallinn from ethnic Russians, who considered the statue an important symbol of victory over the Nazis.
Russian youth movements besieged the Estonian Embassy in Moscow following Estonia's actions. The embassy later suspended work for security reasons, and the siege was stopped after Kaljurand left the country.