Born with cystic fibrosis, Elina was often hospitalized for costly treatment programs, the mounting bills eventually driving her father to retire from Finland's Utti Jaeger forces and take work as a freelance mercenary. However, this career change failed to solve the financial difficulties, also causing her parent's marriage to disintegrate, and Juhani's debt grew deeper.
Sometime in 2010, Abstergo Industries' Dr. Warren Vidic led a strike team into the Berg home, alarming Juhani and startling Elina from her sleep. Juhani watched as Vidic calmed Elina, and administered a medication which he claimed would cure her ailment.
Promising financial compensation and more of the medicine for Juhani's participation in the Animi Training Program, Vidic was able to convince Berg to join him, on the condition that Juhani be allowed to kill the soldier who had awoken his daughter. By 2012, Elina's condition had improved remarkably. Her father's work, however, put her in slight danger; his superiors felt that she could be a risk to Otso Berg's effectiveness as a field agent. An example showed when on a mission to capture the Assassin leader William Miles, where Otso Berg refrained from moving in on him due to the presence of a large group of schoolchildren. When this was pointed out in the debriefing, Laetitia England made a not-so subtle threat towards Elina, much to her father's anger.