I think Signy'll find the idea of a dwarf adopting a human child to be odd, but rather sweet--and having someone around who understands dwarven culture will probably be really useful! It's like a piece of home! Almost! Except for how he's so tall!
And, well, she'll have questions back, as she usually does! Many of her answers may be "Well, the Paragon knows this, not me," but at least Thren has one of the best chances in the group for knowing what a Paragon even is. :)