The envoy was welcomed in the mansion, however the guards that accompanied her had to stay elsewhere, Theo was kind and thought to give them coins to stay at an inn.
Keeping the envoy comfortable and safe until the arrival of the master was a message of good faith. Had an envoy not return nor communicated through the use of a communication artifact, it would only mean that they were dead, and that incited very terrible things, and thus, it was an unspoken rule to have envoys be treated properly.
Lord Markus Gloria mentioned in his letter that he would arrive in three days, and though he didn't explicitly mention if he was going to bring a significant number of men, it was implied. A man as powerful as Gloria would bring men to accompany him, he was much too important to be scantily escorted as the envoy was, and that in itself was something to be wary about.