
Contrary to common belief not all bitches are natural mothers, some are very confused at first, and take a few days to accept their puppies and know their duties.
I understand that in this breed poor mothering traits are very common. Did you not have your bitches breeder helping you, which if you are new to breeding is what you should do.
You need someone who would have guided you through the whole process, especially in a breed like this where whelping difficulties and rearing problems are more likely.
Newborn puppies need feeding around the clock every two hours for at least the first week, then every three until their eyes are open.
Toy breeds development can be quite different to most ofter larger breeds so i will leave those in the know to answer your other questions.
Just because your bitch is temperamental/hormonal at this time does not mean her temperametn has changed permanently. It's all a bit like Baby Blues or even Post natal Depression for some bitches.