I am with
@Brutu on this, at least mostly, she didnt know what was going on, she just heard something third hand and based all her actions on it. She was acquainted with the lord, she had the easy possibility to, at least, ask him about the matter (others may have not, since he is the lord, but she is someone who easily can go to talk to him obviously at this point).
He was at fault for the matter, thats true, it is his responsibility to make sure all money flows to the points it should, he has to fight upcoming corruption and failed to do so in this case, but it wasnt intentional and she could have helped to fight corruption if she just has asked about the matter, instead she indirectly supported the corrupt pig, by not letting the lord know what is going on. If he hasnt been so behind finding out about the eggs (a minor matter, good possibility that it will be ignored, because there are bigger things to deal with) the corruption would just go on...
PS: But dont think it really tarnished his reputation, he seems to be quite liked and the people who dont know the background will more likely stand to him or at least think its just a personal thing between the two people.