As the mother of another extremely fussy eater I can honestly say the best tactic is ignore, ignore ignore.
I know it is easier said than done but believe me it is the best tactic.
DS1 is sooo fussy and after worrying and fretting for ages I have got tough since the new year.
I cook one meal for us all although to be fair I am taking small steps with him as to what I put on his plate.
He gets the same as us with 1 thing on his plate he will eat. so I suppose that addresses your point 1.
Point 2: Don't coerce don't get into any battles or confrontations, if she says she is gull after 2 bites then fine let her go from the table she will honestly not let herself starve. ANd as I don't agree with using the food as a bargaining tool still give her yougurt/fruit pot.
Point 3: Ignore again. If she wants down from the table let her go, the fact that she stands next to it suggests she is trying to get into a discussion about it and when forced stops eating again getting loads more attention for it.
Point 4: don't feed her she feeds herself or not at all. Again she will not let herself starve she may feel hungry for a bit but she will give in before you do if you are firm and consistent.
Ditch the star chart honestly.
I know it sounds like these things are easy for me to say but I have been where you are now and it does get better but it's yourself you have to get tough on not her.
SHe is getting loads of attention for this behaviour right now.
One thing for a few days expect her to eat very little it will get worse before it gets better because she will test you to see who will give in first...make sure it's not you. 
I got tough because DS1 had started to refuse even the foods he would consistently eat so had to do something.
It is working, not an overnight miracle but DS1 has tried and will now eat 2 new foods and has started eating the things he did like again because he now realises there is nothing else. This change has been most dramatic over the past week as he realises now I mean it.