How old is she?
Under 3 you can definetly do that.
Over 3 she will have child TS credits that can only be used for child TS meals, sharing would leave you with only child credits, and they will not let you order 2 kids meals (one for each of you) because your card would say 1 child.
Buffets you can not share if she is over 3.
If the extra kids credit thing is not a problem then you could share a meal with her.
I'm just not sure it is worth it anymore.