Elsa smiled widely at Anna, incredulousness at the idea that she ever wouldn't want her sister around shining through some. "Of course, I don't mind. I'd love it too, actually. It's why I asked." It was sometimes easy to forget that Anna had genuintely believed for over a decade that Elsa didn't like her, and didn't want to be around her, simply because her feelings on the matter had always been the extreme opposite. But she couldn't let herself forget that Anna needed reassurance in this situation. Especially this version, that hadn't spent nearly a year rebuilding her relationship with Elsa.
Enthusiasm dampened somewhat at the guilt that reminded her of her role in Anna's lonliness, she turned to Isaac, trying to rebuild her polite smile. She found, instead, that she was genuninely saddened by what she heard. Of course she knew that not everyone grew up as privleged as they had been, but the idea that anywhere could be worse than Marrowood just... made her ache. She'd had the same reaction when she'd learned the truth of Babydoll's world.
"I'm glad to hear that," She said, smile now notably less cheerful. She disliked herself somewhat for the feeling, but she couldn't say that his sad life had influenced her feelings about his relationship with Anna. If anything, it just emphasized the differences even more. "I'm sure you add much more to the restaurant than it offers. But... your world. Why is it that you're so unhappy there?"