It always impresses me how differently people interpret these games. To me, Lyriel is the least interesting of the girls, the whole reluctant sub personality doesn' t work for me. It's hard for me to imagine a less sexy setup than "guess I'll have to do my duty". And yet some people love it.
Props to the dev for giving the player the option to reject it. But sadly the followup is that you have to grind even more points and then go back to ask her, hat in hand, to please do the duty-handjob. Would have been great of she came begging for it. But a big part of her personality is that she'd rather make up excuses, I guess.