Rabbit is having difficulty giving birth

Question
2 of our rabbits accidentally bred.The female is a mixed breed(she looks more like a rex) the male is a holland lop.She started giving birth about 1 this morning,the first kit was stuck at the shoulders/head for  a long time so we  finally decided to assist her in getting it out.A 1/2 hour later she started  trying to have another but  she seems to have stopped trying.Is it dangerous for her to be having such trouble for so long ? I am not sure how old she is, she was a rescued rabbit , so I don't know much.. I'm a little concerned about the difference in the head size between the two.
One more question. Is it ok to move her? She is outside , and it will be getting pretty warm  in a few hours  so we were going to  bring her inside.

Thanks for any help  you can give me

Answer
Hi, you need not move her.  I havelearned from a recent experience that rabbits and babies need to stay int he same cage, in the same place, together until they have opened heir eyes.  This is dangerous but if she is don and doing okay then she is fine.  Also the head size between the kits is a problem.  The one with the larger head may be a peanut, a baby with birth defects.  This happends when there is a doubled dwarf gene.  If it is a peanut then he will die a certain death becuase peanuts are unable to process milk.  I will let you know if yors is a peanut or not if you can send me pictures of both kits at lops4ever222@yahoo.com.  I will then be able to tell you if he is or not.  Thanks, Kiersten .