To understand why Rya was in such a shocked state, we must see how the world looked through Aster's eyes right now.
Since he got these eyes back at the secret realm, Aster has been trying to find out what was their ability, Lilia's wings gave her a high proficiency in the energy path, she hasn't used it yet, since so far, she has only manifested her wings in the mind space.
Then there is Alice who got her tail which increases her physical strength a lot and complements her fighting style.
Those two have reached the baby stage of their lineage properly, being able to manifest a dragon trait at will at this point, this is proven by the fact that they now have those pretty scale patterns on their upper and lower backs respectively.
But Aster hasn't gotten to that point yet, he manifested the eyes of a dragon, but there is no scale pattern yet, so he can only suppose he hasn't fully reached the baby stage, and that isn't all.