Welcome to Flyertalk. Sorry for your friend's difficult times.
I tried finding bereavement fares a few years ago before I started flying much and found what the others said. It is not really a good discount.
Try consolidators as suggested, local agents, or you could look at matrix.itasoftware (dot) com, which is what many on this site talk about using to compare fares. It let's you search on multiple dates and many airports. If you can't find anything direct that is good, then being in Europe, I'd look for the lowest fare from all of the EU to Columbia, then consider a low cost carrier like Ryanair or Easyjet to get to that international gateway.