She was idiotic, and it's not a surprise. They probably saved someone else by taking her out.

[ there is a but here. ]

I spoke to Greed this week. They basically challenged me to help solve what happened if someone dies again. If I don't make any real attempt, they're going to shut me out from getting any potential information from them. They didn't say I had to actually solve it, but I can't do nothing.

[ which is his way of saying that when he tries to figure out what happened to grell, don't think it's because he actually feels bad for her. ]