"President Trump and I have developed a good working relationship, which doesn't rule out having different points of view," she told reporters, according to The Hill.
She said that she and Trump are trying to develop a common strategy towards Ukraine, Syria and the war in Yemen, because "all these conflicts are at the doorstep of Europe."
"If we want to resolve these problems, if we want to help people, we need strong involvement from the United States," Merkel said.
The relations between the two leaders took a sharp U-turn recently, with Trump also praising the "chemistry" that he had developed with the chancellor.
"Yeah, it's funny: One of the best chemistries I had was with Merkel," Trump told reporters earlier this month.
The first public meeting of the two leaders sparked massive bewilderment after they did not shake their hands for the cameras. During that visit, Trump said Germany owes the US particularly large sums of money for defense services.
"Germany owes vast sums of money to NATO and the United States must be paid more for the powerful, and very expensive, defense it provides to Germany," Trump said in his Twitter on March 18 after the meeting.