It may be too soon. One month after treatment is not very long. Depending on the treatment she had, it may take her many months or even years to recover from some of the side effects. A lot of reading I have done strongly indicates that friends and loved ones often tend to assume that once treatment is finished that the person should be back to their normal pre-cancer self and that almost never is the case. Surviving cancer changes you forever and each survivor has to find their own NEW "normal. Having said all that, by all means, continue to support your loved one in every way that you can, but most likely, one of the most important things for her right now is being able to call her own shots and do things on her own terms. Cancer often makes people feel out of control and helpless about a lot of things, so it is vitual to let them make their own choices. It certainly wouldn't hurt at this point to look into PT, talk to a couple of therapists experienced with cancer recovery issues, but PT can be a rough road that takes a lot of time and patience and she may just not be ready to deal with that yet.