I took Greta and Alwan to see who would get fed up with me first. Alwan shouted at me how I tainted him with my breaking of Shaper laws. Greta was quite pleased by it. I want to see if she will get freaked out when I've used many canisters, or when she sees the geneforge.
Alwan had a bit of a big mouth anyways. He told off the shade in the innermost mines on the first island. The shade paid no attention to him, but I can see how he would possibly cause problems. Greta tends to whisper to me rather than just blurt things out, so far at least.
Edit: Yes, I assumed so as they were always bickering. I'd have figured he would have left sooner than that as he disapproved of most things. I tend to read into these types of things too much.