21 month DD won't eat for me
I recommend pretending like you don't care whether or not she eats. My 19 month old daughter still nurses, but I don't let her nurse for at least an hour before dinner and then not until I'm through eating. I used to try and say she couldn't nurse until SHE ate something reasonable, but I think that had me focusing too much on her food intake which only made it go down. Also, the more finger foods and less spoon-feeding, the better.
Eh, I wouldn't stress about it. I would put the food on the table, and let her eating or not eating be ok. Personally, I would nurse her if she asked, but set a limit of counting from say 1 to 50. Then suggest food again.
FWIW, my 22 month old decided sometime in the last week or so that meals now need to involve him and he will sit in a chair at the table. I never really push this with littles, and let my kids graze as they want, but somewhere between 18 months and 4 years old, they have all decided that sitting with me at mealtime is a good idea.