The metaphor here (parting thrust) is sword fighting. What this phrase basically means is that she is trying to decide upon a suitably insulting thing to say as she leaves (which the author compares to a well placed stab which ends a sword fight).

"Comely" is an old word roughly meaning "pleasant", "good", "handsome" etc. I would interpret "all comely" to mean good/pleasant in every possible way (good looking, kind, generous etc.). Once again, this isn't exactly current English; so I suspect you found this phrase, in a rather old book, possibly referencing the Biblical character of Joseph-son-of-Jacob.

In general, knowing when to use the onyomi or kunyomi will come with increasing familiarity with the spoken language, but there are a few patterns which hold true in most cases. The presence of okurigana (kana attached to the end of the kanji) tends to signal use of the kunyomi. Particularly, this holds true for verbs, in fact, I've yet to encounter a verb stem which is not kunyomi. When more than one kanji in a row is used to express a single concept, the onyomi are typically used. For example: 食べる - TAberu - to eat (kunyomi) 食堂 - SHOkudou - cafeteria - (onyomi) Rules beyond those two become a bit more haphazard. Single kanji words and adjectives are kunyomi more often than not, but there are innumerable exceptions. Numbers tend to be onyomi, except with the counter つ, but the kunyomi for 4 and 7 are often used for stylistic reasons. Some kanji have only an onyomi (such as 気) or kunyomi (such as 緑). Some kanji have multiple readings of either class...

This is figurative language describing the blouse. The "bottom edges" are the bottom part of the blouse which had been tucked into her pants or skirt. "Pressed cotton" implies that the blouse is made of a cotton fabric and has been pressed (that is: the wrinkles have been smoothed using a hot iron). "Pressed cotton", in this instance, might be considered a synecdoche. http://en.wikipedia.org/wiki/Synecdoche

That would be John Boorman's "Zardoz", unequivocally. Trailer: http://www.youtube.com/watch?v=kbGVIdA3dx0 Critical Analysis: http://tvtropes.org/pmwiki/pmwiki.php/Main/Zardoz

"Doodle" is a colloquial term for amateur drawings. The word order makes "him" the indirect object of "drew". "Drew him doodles" means "drew pictures for him". If the word "drew" is unclear to you, it is the past tense of "to draw" (to make pictures).

There are two words in this phrase which have multiple definitions. First I will point out which definitions would be understood in this case: cover - a blanket, quilt, or the like restrict - keep within certain often specified limits or selected bounds (dictionary.com) What this means idiomatically is that they remained on top of the sheets and blankets rather than getting into the bed in the normal way. It also implies that one or both of them may have wanted to go under the blanket, but the speaker prevented this from happening.

Neither sentence is technically incorrect, nor is there a significant difference between the two in meaning or emphasis. What makes this matter complicated is that there are two clauses at play, and, in each sentence, one clause is subordinate to the other. In the first sentence, "What/which do you think" acts as the subject of the verb "is". In the second sentence, "the best restaurant in town is" acts as the object of the verb "think". One might argue over which sentence conveys the message more clearly, but I find both to be understandable and passable as native utterances.