I can definitely see why people would pick at Simeon's lines here, about her not thinking of her own happiness. It probably is a bit of wishful thinking on his part because he's so interested.
That said, he's not wrong. Chapter one it has her looking wistful in the middle of a fantasy from a novel, and mentions that she's had someone take a look at her and walk out. Chapter two basically had assuming it'd be a loveless marriage and accepting that. I do think she wants a crazy romance but has some self-esteem issues. She does a great job of turning her insecurity into strength with the deliberately plain social camouflage.