I'm glad everything worked out ok.  Lat year in July I had a similar issue.  I had two hens in the same area, and the divider wasn't very good, so it kept falling over.  I had one hen with 5 one-month-old chicks, and the other hen was just setting.  The second hen had 6 eggs-2 were infertile, one was a quitter, which left 3 eggs.  When the divider would fall over, the first hen would chase her off the nest and dig in the nest.  So out of the three, one got a big hole pecked in it at about day 12. So I Put the divider up again.  Then on day 19, when I went and checked on them, the second hen was on the other side, with the divider still up, and the two eggs were pretty cold, but it was July.  So, I put the other hen over to her side, and put up chicken wire(finally).  Both eggs hatched, and she was a great mom.  
 
P.S- your chicks are super cute.  What breed are they?  Sorry if you already said what they are...I can't remember right now.