Sandra studie on University of the Philippines College of Medicine and later graduate and became license medical doctor.

Eriguel later won garnering 17,595 votes out of 7,384 of Army Major General Mario Chan.

In 2016 Philippine House elections she run for Congresswoman of the 2nd Disteict of La Union to replace her husband who is in his second term.

She got 120,901 votes winning via landslide out of 68,142 of Dante Garcia, 24,881 of Thomas Dumpit, Sr., and 781 of Teddy Agaceta.

Eriguel also served as Chairperson of House Committee on Inter-Parliamentary Relations and Diplomacy from December 7, 2020, until June 30, 2022.