ACTE III, SCÈNE XI
1: c'est qu'il a… beau père: Isn't father-in-law plucky, though! C'est que introduces a reason for something that must be supplied. Here:«(All this is) because he,» «the fact is that.»—de son côté = and on the other hand.
2: au fait: after all; lit., «coming down to facts.»
3: à point nommé: always = in the nick of time, never «at the appointed place.»