Amid issues with the Precinct Count Optical Scan (PCOS) machines, she publicly described some teachers as "either forgetful or plain stupid" due to difficulties in transmitting election returns.

The comment, made out of frustration over persistent technical failures, sparked widespread condemnation from educators, who demanded a public apology for what they deemed an insult to their integrity and professionalism.

[5][6] In response to the backlash, a meeting between COMELEC and the Department of Education was convened, where her superior, COMELEC-XI Director Wilfred Jay Balisado, formally apologized on her behalf, recognizing that the statement was inappropriate and offensive to teachers.

While questioning teachers about transmission failures, she experienced a sudden spike in blood pressure, leading to the temporary suspension of the canvassing process in Davao City.

[10][11] Ferolino was actively involved in overseeing the 2022 Philippine general election, ensuring compliance with electoral laws, and resolving disputes related to candidacy and vote counting.

[12] She also accused then fellow Commissioner Rowena Guanzon of attempting to influence the decision by publicly disclosing her vote against Marcos before the official ruling was released.