That’s not what the business insider linked in the tweet says. It says she described the White House plan as “insufficient” meaning there wasn’t enough stimulus in it. How can criticizing a bill for not having enough stimulus mean you are against stimulus?

The House had passed the HEROES act for additional stimulus in May 2020. The Republican senate refused to even put it up for a vote. She was always for passing of the HEROES act even during this October - December period. She was always pro stimulus.