Head maid has a point, though.
Her staying around at the mansion, especially after all the time she's spent with Alejandro, is definitely going to raise some suspicion in the imperial palace (especially among rivals to the Leviti house).
And it doesn't take a genius to put 2 and 2 together and realize that Ibelina must have played a role in removing the curse, even if they don't realize that she herself was the direct cause of such.