Oh my.
Kala, you have a good head on your shoulders - PLEASE take this opportunity to talk about basic economics with your friend.
They should have at LEAST 6 months worth of living expenses in savings, but to not have money for food for just a few weeks, AND still getting pregnant is just NOT smart
I'm very sorry for what happened to her, but accidents can happen at any time to any one and ESPECIALLY if you have kids, you need to prepare for emergencies.