Answer: The answers are:
1-The encountered several problems that included:
Not been able to see outside.
Dirt everywhere,mouths, floors, dinners, etc.
Dust fogs in and out of the house.
Illness, chest problems, pneumonia.
2-She's optimistic, takes advantage of lulls in the action, and she helps her family.
3-Optimism, endurance, patience and diligence.
1-"Our faces look like coal miners", According to her letter Grace describes the struggles she has gone through.
2-"One morning, early, I went out during a lull, and when I started to return I couldn’t see the house. I knew the direction, so I kept on coming, and was quite close before I could even see the outline. It sure made me feel funny".
3-....."then we have a frenzied time of cleaning, anticipating the comfort of a clean feeling once more."