Hello Betty,
It sounds like you're almost there. Usually we'll see the temp drop and then 12-24 hours later the nesting behavior, anxiety and hiding and then labor signs of abdominal contractions soon after. You shouldn't have to do much as mother nature will usually take over and she'll take care of caring for these kittens. You can usually get by with leaving her in a nice dark, quiet room and checking on her every 2-4 hours to make sure she's not in distress or having contractions for too long without any kittens. The more you sit there and watch her, the more stressed she'll get and more she'll put off having these kittens.
Just FYI- if not already being done, I'd feed her kitten food now and up through lactation as it'll give her more calories and higher amounts of calcium to make up for what she's losing in milk.
I hope this helps, best of luck.
Cat Veterinarian
DVM, Emergency Veterinarian; BS (Physiology) Michigan State Univ