She was just happy that Olivia trusted her at all, and even more happy that she had agreed to stay with her at the shelter this whole time. "Yellow huh? Yellow's pretty, I like yellow too though usually it doesn't go with my red hair or I'd wear yellow clothes."
If Olivia didn't have enough money to get some flowers, she'd probably give her some just to get some. After all they were walking all this way to get them, it would be a shame to come away empty handed. And she liked seeing Olivia happy anyway.
Of course Felicity didn't know that anyone was following them either, she was kind of clueless when it came to that sort of thing. And she wouldn't know what or whom to look out for any case. "I might get some daisies or.. lilies or something though. I'm not quite sure, depends on what they have."