Why I am speaking of 『it seems』 here? Honestly, keeping woman company while they are shopping ends up wearing down your body.
“Erich-nii-san, don’t you go out with Miriam-gishi-san frequently enough?” (Wendelin)
“I accompanied her once before, because of that I learned from experience.” (Erich)
Because Miriam-gishi-san was born as lower-ranking noble, she doesn’t seem to be a person who squanders overly much.