Not to stir the pot or try to start something, but maybe the producers of the game wanted to just add some character to Samus? Everyone is used to Super Badass Metroid Slayer Samus Aran. They probably just wanted to add some kind of weak side to her so people'll not see her as a robot bounty hunter, but an actual human being.
Just my 2 cents on the matter.
Just my 2 cents on the matter.