Yeah, that's a good art pretty much above average. (depends on what you consider average tho.)
Scaling damaged the pages a bit, but other than that it's alright.
Daifukumochi (大福餅), or daifuku (大福) (literally "great luck"), is a wagashi, a type of Japanese confection, consisting of a small round mochi stuffed with a sweet filling, most commonly anko, a sweetened red bean paste made from azuki beans. Daifuku is often served with green tea.
Yes. She was about to be sexually assaulted. He even mentions how she would have been impregnated, so clearly they're Goblin Slayer style ones at that.