In the Jagged Alliance 2 source code, the following skills are responsible for planting and disarming explosives: experience, intelligence, explosives, dexterity and the amount of energy, and possibly some dedicated skill.
Dexterity, shooting and the amount of energy used are responsible for the accuracy of throwing. Here dexterity had the most attention.
From Fauda's description, she's mostly a throwing explosives specialist, so taking JA 2 as an example, when it comes to throwing accuracy, 45 agility on a character like Fauda is actually a disaster.