'Laelle' easily sees Melinda's desire for 'animal' dominance ... not only does that not phase or bother her, as this portion is more Sabrinian ... but it actually makes her smile slightly with some sort of maternal pride.
She doesn't do anything to try to usurp Melinda's position, but will be pleasant in conversation to help her.
'Lukasz' will look to Clyde as the children play for a mental conversation.
He'll do the same, but in a different way, with the young girl.
First, how old does this well look?
* K: Engineering(?) (1d20+11)
Next, he'll walk a circuit around the grounds. Hopefully, he'll have convinced the others to come and help him. The following rolls are either as primary, or if subordinate in base modifier, as an Aid.
* Spot, in case there is something that might be easily noticed: (1d20+36)
* Search, to take a closer look at any thing that might seem suspicious or out of the ordinary ... and then followed up with carpet searches: (1d20+29)
He'll then focus on looking the terrain. Considering how much time went by since Cassiopeia's time, there might have been other structures or something that was overgrown ..... or perhaps even overtly buried. If just a 'layman's' senses wouldn't notice, then he'll put his noggin to use ... and again, hopefully enlisting the Aid of any of his fellow "in the trenches" outsiders.
K: Nature or Geography, whichever is appropriate (1d20+11)