BRO THEY SHOULDA WAITED FOR THE REST OF THE KNIGHTS WHYYYYY
This was the one maid she trusted from that house cuz she was the only one who gave her food despite knowing there might be consequences and as a result had her job taken from her. She is visiting her restaurant to pay her back for trying to help her out a bit all those years ago and the loss of her job that resulted. She is upset because they are treating someone who she trusts as untrustworthy. She is still a child, and while she has her trust issues with people, this is someone who has given her a reason to trust her and whom she considers a fellow friend who was slighted by the Sperado household. She won't let her friends be insulted. Not to mention, time with a loving family may have softened her up a bit and made her more accepting/understanding.