Apologies for harsh comments earlier; I think all the girls are talented and don't deserve such criticism. I also let a bad day here inform my response...
Theory - am I correct in thinking that Jessie's only training has been lessons with her mother? If correct, it seems her mother may have been a little soft, as Jessie seems to have problems in following critiques. However, I think in large part that could be due to her having to correct various things, learn songs, learn accent, learn to walk in heels etc. Really wish they'd give her lower shoes as I think her movement is improving; certainly she's better in group numbers than at the beginning.
I also think she was done no favours with the choreography this week - all the crouching looked terrible!