Hello,
1) I have read that suggestion earlier but didn't reply since I was deciding between, a single lab level or 3 expedition levels collecting few samples. I leaning more towards the sample collection gameplay.
2) Her speed was set to zero while she was talking with Annie.
3) Made a different check if spider is with Annie. Tested with multiple spider so it should not occur again.
4) Good idea, since we already have an option for going back to menu directly.
5) Increase the collider value by 1.5x.
6) It not. When she is done "100" coins were added to current money bar (Not the money that is used for shopping). It is changed to "100 + (50 x levelUnlocked)" coins.
7) Yes, multiple buffs can be activated by purchasing them at each level. Annie doesn't have to wear that particular costume to have that buff activated.