Hi kee,
I too have the same going on at my place. I was diagnosed & had a right mastectomy in early term 4( oct) last year. My 8 yr old daughter has been ok, but my 6 yr old son is really struggling. He started getting upset every morning at school for the last month of term 4, then cried most nights during the holidays saying he didnt want me to die, and now back at school he is continuing to be upset each morning.luckily his teacher has had his same experience in that her mum had breast cancer and mastectomy 7 yrs ago, and so she has been very supportive. I will get my self one of those books mentioned above and if things don't get better, I will seek out a counsellor.
It is heart breaking to see them struggling with such an adult issue, and all the hugs in the world don't seem to be enough.
Goodluck and keep us posted on how you are both going.
Love Sam xo