Gave up potty training DD1 2.8 about 2 months ago, when should I tyr again?

[MinkyBorage]

I gave up because she would not do a poo in the potty or toilet, managed about two in two months, each was followed by a aprty with sweets, chocolate, puppies, fireworks... you name it (well nearly). It began to wear pretty thin cleaning poo up every day, and despite my best efforts to conceal it, dd started to apologise, nd I felt bad for her. Then she got a bit of a tummy bug so we went back to nappies, which she loved.
Anyway, she keeps taking her nappy off to wee in the potty but is still just pooing wherever she is, no chance at all of her doing it in the potty or toilet as far as I can see.
Do I start again or give her a bit longer?