I agree don't give in. I always walk away from ds in these situations and leave him to it for a few mins. Usually I come back and find him tucking in, even if it's just a few mouthfuls I'm happier than if he refuses outright.
You could always keep the pasta and reheat it a bit later if she's hungrier then and more likely to eat it. I do this all the time with ds when he's playing silly buggers with his tea.
I'm torn with this sort of thing - I do the very worst possible thing, sometimes I do it and sometimes I don't ie inconsistent (very bad!).
But sometimes I just think, imagine going to a restaurant and saying you fancy spag bol and the waiter says no you have to have pizza!
Maybe a bit of negotiation is ok sometimes? Or giving a choice where it's reasonable - say "you can have a plate of the meat but if you don't want pasta you'll have to have it with bread as we don't have noodles - you choose". Sometimes they just feel they want a choice or to express an opinion.
The amount of times my Son does this, and it never gets easier - roll on 4yrs old. It is hard, the last few times I have taken it away given him a bath & pj's as usual then re-heated it and he's scoffed away, maybe it was just luck or defused the situation and he forgot but hang in there. If he dosnt eat it he will have a massive breakfast tommorrow and Mummy has won
I'm in the 'don't give in'camp. When ds was little I always had this thought in my head, if I felt I was being mean but, it was for his future well being. He is not in a refugee camp, we are so luck that I can put food in his belly, clean sheets on the bed, I don't have to walk miles to get water and he hasn't got to play in the gutter while I work 16 hours.