The German leader looked bemused when asked about a claim at the Republican convention that President Trump had “charmed” her.

BERLIN — Chancellor Angela Merkel of Germany refuses as a rule to comment on the internal affairs of other countries or pass judgment on their leaders. The president of the United States is no exception.

But that hasn’t stopped her from letting her face do the talking, reflecting confusion, befuddlement or exasperation regarding President Trump as the situation required. On Friday, she was at it again.

sked during her annual summer news conference about a claim made by Richard Grenell, the former U.S. ambassador to Germany, that he had “watched President Trump charm the chancellor of Germany,” Ms. Merkel drew her eyebrows together, tilted her head and leaned toward the reporter.

“He did what?” she asked.

“Charmed,” repeated Marina Kormbaki, a journalist with the German reporting collective R.N.D.