Two versions of the amalgam with the seven souls of children is Omegamet. (2 was drawn before Undertale Yellow)
A strange fact - my first version of the Soul of Justice in the form of Amalgam was the most evil and aggressive. She called everyone with a cry and chased after the one who came to the laboratory
MTT-Brand Burger Emporium is the closest restaurant to the lab. And because of Alphys relationship with Mettaton she probably has a discount on that place. So she probably buys food there for the Amalgamates. But I don’t think that Kanako would like the Glamburger… Would probably remind her of the Feisty Slider back home… Where her mother is… She would probably miss home even more…
(After calming down)
And I don’t think she would be big fan of the Glamburger after being used to eating more traditional burgers (at least I think that Dina makes her food in the saloon and isn’t any brand food)