"Know what?" Wren grumpily asked which made Alexander Han's brows furrowed. Though he cannot hear the conversation between the other person on the line and Wren, Alex was clear to know that it concerned Seraphina. Hence, he observed Wren's expression to grasp a little bit of hint of the situation.
"Ehโฆ Leon is here." After some time of contemplation, Riggs came up with a creative way of stating Seraphina's disappearance. After all, Leon would only show himself if either Seraphina told him or he sensed Seraphina's movements -- that is very clear to all of them. That Leon was only interested and willing to stretch his muscles under Seraphina's command.
Even so, if Riggs called just to say Leon appeared, that just meant that the person Leon came to wasn't there. Hence, Wren let out a heavy sigh and relieved at the same time. In his mind, finally, Seraphina came out from her solitude.