[Merlin just hums at her, focusing on eating because her thanks doesn't actually require a response from him. She doesn't need to thank him at all, but she certainly doesn't have to do it before he's even managed to speak to Eggsy about his issues.

Her small-talk gets him to look back at her, a slow smile curling his lips as his eyebrows crawl up his forehead. He's clearly fighting back something that could be close to a laugh.]

Thank you.

[He's quiet again for a moment before he inclines his head a little towards her and continues in a much gentler tone,] You don't have to stay, Roxy. I appreciate whatever magic you used to get Eggsy up and out the door, but I'm not going to force you to watch me eat breakfast.