Hi Beck,
I was diagnosed in April 2012, decided on mastectomy of left breast instead of lumpectomy and went through private system for surgery (also had a space saver implant inserted at the time of surgery) I had my chemo through the public system and couldn't falter it.
I am due for reconstruction in April and will do that through private system.
I too was concerned about the hair loss - lets face it who wouldn't be. I purchased a wig on Oxford St in Sydney and its beautiful but I actually never wore it. I felt much better bald wearing scarves or beanies rather than have to worry about if falling off or dealing with hot flushes.
i have blog you and your family are more than welcome to read. hopefully it will give you all a laugh
you can start here..
http://glynnandbearit.wordpress.com/2012/04/05/hello-world/
I had 4 rounds of chemo, no radio. Chemo wasn't as horrendous as i imagined. Everyone is different.
Oh.. great book to read Breast Cancer Taking Control by John Boyages - you can actually get it here on BCNA site i'm sure.
I can't comment on egg freezing as I've already had kids but yes definitely something she should explore.
Feel free to send through any other questions you may have. And oh there is so much information out there sometimes its better not to dr google too much.
Good luck, your sister is very lucky to have such great support already.
love and light
xox
Sandra