Hello,
Your chicken may need a bit of assistance.
Are you bedding her on hay, as the spores in the hay may be making her sneeze. Bedding them on straw or shavings would be better.
Put apple cider viniger in the water this kills bugs and acts as a slight tonic.
Make sure she isn't in a draught when shut up at night.
Check to see if her nose smells, if it does she may have myco, then she will need some attention from the vet.
Not sure what the hicupping is.
good luck from missy