My hen Lucy has been sitting on eggs for a while now but I think its over 21 days. I should have taken note of the date she started sitting on them but did not. I feel so sorry for her as she gets really upset when I try to move her. I have some RIR chicks who are about 3 weeks old. Should I perhaps try to get her to be their mum and then she might be OK. My husband thinks I should get more eggs and put them under her but I think its too long for her to sit on eggs again and I also think its too late in the year to have more chicks. Any advice would be great.