This book is a bit slow moving to be sure, I guess it is a good end fight at the end of this section, BUT we obviously know that Jayne will be fine, so that kind of removes the drama a bit.
I was honestly expecting more of a reaction from Jayne about Jane. It seems weird that it takes him so long to even consider that she might be his daughter and that he doesn't seem to have much of a reaction that Temperance essentially named her daughter after him (whether his or not). He's dumb, but is he that dumb?
Temperance is a bit of a mixture of the madam from Heart of Gold and Saffron for me, though not quite either, her character gives me the feeling of "we've seen this before", but she does fit into the world, so that's fine.