Shall I give her the antibiotic I have from the local feed-store?I'm so glad that the chick is still viable. Personally, I would seriously consider putting the slow start on antibiotics...I'm not keen on using drugs but I've learned it can save a chick who's had a slow start...chilling and hard hatches lower the immune system and allow bacteria to grow, and you often don't see the full result until you take out a dead chick at day 5. EDITED TO ADD: with a valuable breed, especially if it is the only one you got, I'd error on the side of caution and use the antibiotics. I didn't used to do that, but I got tired of pulling out dead chicks from stress and chilling when I tried to graft fosters...a little antibiotics could have saved the day.
As to the others...hmmmm....that is a tricky one. I'd be tempted to give them some help if momma doesn't clean them up....have they had a chance to dust bathe yet? I'd prefer not to water bathe them as you risk chilling them. If you do, bathe in warm water with the mildest of shampoo and place in the brooder until they fluff again. Mom will be madder than, well, a wet hen, but they should reintegrate well in a couple of hours. You can try to hurry the process with a hair dryer set to warm, low....again only if you feel it is absolutely necessary to bathe them...I'd see if some dust bathing doesn't knock most of it off.
My thoughts.
Lady of McCamley