Senator Elizabeth Warren, who is being looked at as a possible vice presidential choice for the Democrats, dropped by the campaign headquarters of Hillary Clinton on Friday in Brooklyn.

Warren, who last week endorsed Clinton during an interview, spoke with aides, took some photos with workers and gave a few remarks.

One comment she was said to say was “Don’t screw this up.”

Senator Warren called Clinton a fighter, which was the same terminology Warren used when endorsing Clinton the week before.

Warren said during her remarks that were posted on Instagram that the Democrats have a tough cookie who has been fighting for the working families across the U.S.

When Warren visited the campaign headquarters, Clinton was not there according to her staffers.

The type of visit by a well-known politician is not out of the ordinary for the Brooklyn headquarters of Clinton. Tom Perez and Julian Castro two potential cabinet secretaries who also have been eyed as possible VP picks have visited.

As has Bill Clinton, the former U.S. President, Rep. Charlie Rangel, Howard Dean the former Governor of Vermont and Wendy Davis a former state senator from Texas.

Warren had been in New York to attend fundraising meetings of her own, said a person close to her.

Warren is amongst the lawmakers from the Democratic Party being considered for the vice presidential spot on Clinton’s ticket. However, aides said the process was just in its early stages.

A senior advisor for Clinton downplayed any reading into the VP prospects, noting a public meeting held at the Brooklyn headquarters would be a difficult way to maintain a secret.

However, Warren just visiting adds some suspense to the situation as she has been considered a star for being able to get under the skin of Donald Trump during the primary season with her many tweets.

Warren did not endorse Clinton during the primaries with Senator Bernie Sanders, which was a decision that drew some ire from her colleagues in the U.S. Senate.

However, once Clinton had won the New Jersey and California primaries to earn enough delegates for the nomination, the senator endorsed Clinton.

She said at that time she was ready to enter the fight and to work her heart out helping Clinton become the next U.S. President, while making sure the GOP candidate Donald Trump never get anywhere near the White House.