Hi Sharon
Sorry to hear that your sister has to join our club. Hope she is OK and considering all things doing well.
It's hard to respond generally to what you've asked only because there are a variety of approaches depending on her doctor and what protocol they use. Her reaction to chemo can vary from nothing to a whole gamut of reactions. The only general thing is that about 7-10 days after chemo you reach what they call a NADIR(low point) which is usually marked by fatigue and a general low point from their you begin to gain strength and usually get back on track.
Some areas combine chemo and radiation too. I have not had any experience with radiation and really can't speak to issues there.
I can say the same for the stem cell proceedure. First off there are 2 types of stem cell transplants--AUTOLOGOUS(using your own stem cells) or an ALLOGENIC(using a donor, either a blood relative or an unrelated donor). On these the stem cells are collected in sort of a reverse blood transfusion to be simplistic. There is a more complicated where they actually take bone marrow for transplant and that is a more complicated issue.
After treatment for the cancer and testing that shows clear of cancer then they start the transplant proceedure. Usually begun with high dose chemo and radiation(sometimes) followed by the infusion of the stem cells which is realtively uneventful. Counts bottom out and the wait begins for the counts to rise and the engraftment to take hold. Again reaction varies all over the place.
That is the nickle tour of what you asked. If you have something specific please feel free to ask and I'll try and answer. One thing you might check into is the Luekemia and Lymphoma Society. They have a lot of booklets you can order free of charge that talk about different phases of blood cancers. Also something that is good is the Lance Armstrong Foundation has a notebook that is free except for shipping, which is a good way to keep organized with everything your sister is going thru.
Wishing your sister and you the best
greg