Muscle Mass

i think you should focus on revving up.  the more activity you can do, the more food, protein and calories you can eat.  If you kept a log of your activity and achievements you may notice that you'll gain daily.  I coach diving  and teach piano lessons.  both activities are measure incrementally and one really has to work work work.  One thing I incorporate into my daily activities.. the time passing by ever so quickly,  is isometric exercise.  Any moment of rest I try to use  to train or strengthen  a muscle or muscle group.  I stand on my toes imperceptably at church for instance,  striving striving striving all the time.  I eat for energy, sustenance and strength building.  I rely on nuts personally for much of my caloric needs.  I just love them.  They seem to go thru me well and give me strength and energy.

i hope I'm on the right track here.  I don't know much about your history altho a quick look at your recent posts reveals an amazingly thoughtful woman.  Perhaps you need to think more like an athlete would think.

here is a great webpage outlining the need to be active, rest and eat well..

http://stronglifts.com/how-to-build-muscle-mass-guide/

Diagnosis: 5/10/2008, IDC, 5cm, Stage IIIc, Grade 3, 4/9 nodes, ER+

I used to spend quite a bit of time in the gym prior to diagnosis and felt quite "buff"---lost it all though during the chemo....what has helped me regain some muscle mass was taking whey protein powder (mix it with juice)---I felt a lot stronger within a week or two and it definitely helped me "rebuild"...