Surely she would be invited, since she helped save Emma and MM, but no.
Would you honestly invite the person that murdered your father/grandfather to dinner? Or would you invite the person that poisoned you/your wife/your mother? Would you invite the person that attempted to poison you/your daughter? Would you invite the person that indirectly poisoned your son/grandson?
If you answered no to any of the above questions, then no they shouldn’t “surely” have invited her. If you yes to any of the above questions well then…. wow.
Yup, Regina is real bad in their eyes. That’s why they had to save her from the wraith. That’s why David let her babysit Henry. And so on.