Firo wants to say that any father who didn't appreciate Maiza wasn't worth it anyway, but he holds his tongue. Difficult relationship or not, Maiza might not appreciate Firo insulting his long dead family. He can't keep from frowning, though, so Maiza might be able to guess his thoughts easily enough.

An instant later he's blushing as he realizes he just unwittingly compared Maiza to a thoroughly unpleasant human being. "I-I'm sorry, I didn't mean..." He shakes his head as if trying to slough off the embarrassment. "S-so what did you guys do? Were any of the people on the boat in it with you?"