So glad she's not sick!
I do think you have some issues to consider though -- these relate both to her going through this shivering episode where she was clearly frightened and hiding for some reason, and also that as you noted, she is fearful of the women and not of the men in your family.
Something must be different between the way these two groups interact with her. For some reason she is feeling anxious and worried when around the women, and not around the men -- anxious enough to creep away and hide. The fact that she is mostly around the women is probably the clue and probably related to some overattention, overstimulation, and some interactions that scare her. Do the women pick her up a lot? Carry her around? Pick her up by her front arms (which can be very painful for dogs)? Take her out of a crate or secure place like a dog bed when she is resting or asleep? Get her up to play with her a lot? Is she scolded, pulled around on a lead? How often is she being asked to do obedience training and for how long per session? Is she left alone to eat? How much time does she get where people are around but leave her to herself? How often do people let her come to them rather than going and getting her? Do they squat down or bend over her from above (the latter is very threatening to dogs). Is she squeezed and hugged a lot (also things dogs generally dislike as threatening though they do generally learn to tolerate or enjoy this with owners, in moderation). Do people try and hang on to her when she wants to get down or go away?
Any of these things could be contributing to her reactions and often people don't even realise they are problem-causers or realise the puppy is really tired and getting very anxious. The fact that she seems most happy around the people who probably pay her the least attention is probably a signal that at least some of the above is happening and is stressing her out to the point where she tries to avoid the people she associates with attention she finds overwhelming, frustrating or frightening.
Puppies need a lot of rest time and they also need lots of time when no one is fussing over them. They don't like to be carried constantly and simply the height of being carried can be terrifying. They don't like to be forcibly restrained. Negative punishment (scolding, shouting, leash 'corrections', pulling around on a lead) all will make a puppy avoid the people associated with these activities. They don't like people reaching and grabbing for their heads to pet them (instead pet their chest gently or sides) and dislike people towering over to bend down and pet them. Because they are so cute we tend to want to give them constant attention, and easily forget they can be overwhelmed. Also it can be easy to forget they aren't a cuddle toy.
There's some really good info in the puppy section here:
http://diamondsintheruff.com/behavior.html
This has really good pictures of why humans can be frightening 'space invaders' to dogs:
http://diamondsintheruff.com/bodylangspaceinvaders.html
Maybe take some time to sit back and analyze what goes on around your puppy on a typical day when the women are around and what the men are like when around her. You might be surprised and I bet the information will be useful.