Okay...
If she is 2 years old and this is her first litter she may not be able to concieve or deliver. The pelvis of rabbits is said to fuse after 1 year of age thus why breeders breed prior to then.
When breeding rabbits you always bring the doe to the bucks cage, never the other way around. You place doe with buck, usually if she is in the mood and fancies him she will lay flat out and lift her tail, ear back in submission, etc. He will mount her, probe around a couple of times, thrust once or twice really hard and then fall off the doe onto his side, like he had a heart attack and died, just bloomp off he goes. Some squeal, some do not. All I have had immeadiately get up and stomp their back feet repeatedly for several minutes. I then pick up my does and hold them in the crook of my arm to prevent them from urinating and washing away the semen. I hold them for 15 minutes.
In an hour or two I do the same thing all over again. I mark my calendar that she was bred on this day. I then put the doe back into her cage alone for the next 12 hours.
Usually the next morning, I will bring doe back to buck to see if she is still receptive to him.
If she tries to attack him flat out and makes all sort of noises, she has usually taken and is pregnant. Back to her cage and I now count 31 days on my barn calendar and mark it for the day she will be due. On day 28 I give a nest box.
If I bring her back to the buck the next morning and she does not attack him, I have two options. I can bring her back to her cage and palpate her at 10 days to be certain she is not pregnant or I can let him breed her again right then and repeat everything all over.
You do not want to breed you doe over several days, there should be no more than 12 hours between breedings as then the doe can get pregnant with TWO LITTERS in BOTH HORNS of her uterus which is not good at all.
To understand this, you have to think that rabbits are induced ovulators. They do not go into heat, the very presence of the bucks semen is what makes them ovulate, within 12 hours of the first successful mating.