My "couple" has been broken apart!!!

I had 4 banties that lived out the first group of 30 I got from 2008. One of the aracauana hens hatched 4 babies in april 2009 because I forgot to collect the eggs soon enough. The babies hatched and 3 lived. Shortly after they were born, we noticed that the hen, the 3 babies, and our japanese bantam were a family(and has remained that way for over a year now) Every night the aracuana, jap bantam, and the 3 babies slept together on the same perch. Once the babies were too big that stopped, but the hen and rooster remained together, all the time. on monday they were out and a hawk killed the jap bantam. I know she knows something wrong; is there anything I can do? well she couple with another rooster? (we got another 30 in may). I went out to check on her and she was sitting next to a sultan, but I am afraid she may falter due to a broker heart. any ideas?