You realise raiding your own villages doesn’t immediately make you dishonourable right?

She was ruthless and pragmatic at the cost of herself and her allies for her idealised Britain

She didn’t raid those villages for shits and giggles, she needed war supplies and they were not giving

Kiritsugu was the perfect foil for Saber, she had never been on the receiving end before, He ruthlessly and pragmatically used her albeit with noble intentions

It’s why Shirou is such a sharp contrast because he is the complete opposite to Kiritsugu

Hell even corrupted Saber was pretty honourable, she didn’t just demolish Shirou like she could have, she actively chides him for his mistakes and only really goes full ruthless when he fucks up massively, but even then she is just expressing disappointment he didn’t have the skill to take her out