There's a soft 'thank you' when the door is being held open for her, so Madoka safely passes through without accidentally hitting her head against it. Though Persephone's words immediately make her sink back into thought again.

"The robots we have at home are.. um, well.. very different than the robot people here."

Certainly different than Orisa, that's for sure.

"But sometimes when people imagine the way robots may look like in the future, they do wear clothes! So maybe you could ask her about it..? You never know if she might enjoy it, right?" Leave it to Madoka to try and view things from an optimistic angle.