"Oh," he said, catching her meaning. Hadn't he said to her not to fall in love with an immortal? And she'd said she would fall in love with whoever she liked. Well, this wasn't falling in love, but it was one of the consequences he had feared.
Of course, he wasn't about to say "I told you so" so his vulnerable daughter. He stroked her hair and rocked her gently, waiting for the sobs to subside.