I have two cats a Male fixed cat and a female unfixed...I found her as a stray brought her home and she had kittens 3 days later....Her kittens are now a week old. Her and My male got along a little better before the kittens where born there was still hissing but not much else...Now that the kittens have been born she chases him and attacks him...for no given reason. What can I do to help them get along better??