30 Game 2
Comments

For question 7 I wasn't even clear on what exactly the question was asking. Can I get a bit of clarification?

It's asking who could have left exactly two messages: the first message and the last one.
Clearer?

How can you think about having a column for "out" when you diagram the game? Or how can you even think about that at the beginning? I'm asking this because having "out" column makes this game so much easier.

Yeah; it really helps.
I think the simplest way is to make it your practice to include an Out column whenever you'll be leaving elements out, and especially if you know how many elements you'll be leaving out.

Thank you for your kind response. I'll keep that mind when I do games.

My thought process on #7 was if someone was leaving exactly 2 messages than the only person that could be left out is Greta. So if all others have left messages than the only one left with out an order rule was Fleure. Just thought I would share for another perspective

For this one, I combined your rules 4, 5, and 6 into one rule:
If G, then F and P.
If F, then P and T with P before T.
If P, then H and L, with H before L.
Therefore: If G, then F, P, T, H, and L, with P before T and H before L.
That cleaned things up a bit right away, knowing that if Greta is in, everyone is.

Noice!
(you can tell I really like it when I use my Australian accent)

Hi Dave, are there games that are similar to this one? Thanks!

Depends. I'm guessing that by "similar," you mean "games that (1) ask us to put things into order and (2) use almost exclusively conditional rules (and maybe also (3) that include an 'out' column for items that aren't included)".
If that is what you mean, then no! I can't think of any other games like that.