^^^Don't expect it to be what you've seen on TV or what I'm assuming you have in the back of your mind as to what it's going to be like. It won't be that bad.
Hopefully she'll be lucky and will have little to no sickness from it, not everyone gets the Nausea and their's good drugs to lessen it now if she does get it.
She'll be quiet alot and looking off in to space alot, their will be out of the blue breakdowns and as it goes on she'll get abit more tired and lose some of her strength.
Expect to not get your questions answered and expect bluntness when you do get an answer.
The nurse has gone through "the sheets" on what to expect depending on the type of Chemo, the biggest early one of these in my experience shows up about 2ish weeks in, the Hair, if she has long hair then try and get her to cut it tighter before then so as not to wake up one morning to alot of hair loss on the pillow. It's tough to see it on the pillow but not to bad when you cut it by choice.
It may not be an option and may not be relevant but if it's doable then don't leave her on her own unless she asks to be left alone. People will go out of their way to help if you ask
, so do. If someone around her is a "cryer" (and their's always one) politely tell them to F-OFF and do it somewhere else. Sick people--->F-OFF, her immune system will be weakened so don't risk her getting a bug out of politness.
You mentioned that it's 5 months of chemo, not everyone can/will finish the course, the more she can take the better but don't let her play the strong card on Chemo days when she's really not, near the end of the course talk to/tell the nurses if she doesn't feel up to it on a particular day or she could end up in Hospital for the 2 weeks after.
The 5 months will fly and
I'm not just saying that. It's a month and a halfish since you started this Thread. The long evenings are coming aswell which will be a help.
You won't be able to be a Rock all the way through and that's alright.
Stock up on the Bovril, if she doesn't like it now she'll probably get a taste for it.