Rumble with the Sister's -Part 10
Granny Umba made every effort at least convincing one of the sisters to chase after Alex because, from her point of view, a young and able man like Alex was very difficult to be found on this island atleast.
If they can become the wife of the Lord Mordrake, then the tragedy that had occurred to her in the past won't happen with the girls in the future as no one would have the galls to touch the family of the noble.
Granny Umba sent away both of them to think over what she had said. If she hadn't guessed wrong, Siera already has some feelings for Alex in her heart. As for Ciera, nothing can be said for now.
...
The girls thought it over for sure, but Granny Umba must not have thought that they will take action tonight itself.
Siera sneaked out of her room in the dead of the night while she thought her sister was sleeping who in fact was wide awake.