Jess , my 1and half year old cat had one kitten in the Summer , that unfortunately died at 3 weeks old .... she then went on to have a miscarriage ( she has now been spayed) ..... we recently adopted a new kitten , who is now approx 14 weeks old .... this new kitten was fully weaned etc ...... lately she has been trying to feed off Jess ( Jess lies there quite contently) .... my issue is that she sucks from just one nipple.... all the hair has gone from around this nipple and it’s beginning to look quite sore .... what should I do ?