@ArpanaR I get the feeling that they know she's the Saintess (or at least *a* Saintess since Aira's magic had the same weird golden sparkles), but they also know she's hiding it. So they're trying to catch her in a way that she can't deny it.
@StormTAG the head appraiser knows she's the Saintess. He also knows she's hiding it. He's just trying to trick her into admitting it. Getting her to spill her level was a good start - because the other two are pretty certain now that she is the Saintess too.