hiya cynwldkat,
my heart goes out to you and your sister!!!
I have mg, and a big sister who is always there for me, so I know how much your sister would appreciate all you do for her!!
Dont feel you are doing to little, I know even if my big sister and I havn't talked for a few days I know she is thinking of me.
Your sister is in my thoughts, and prayers, and as Im sitting here crying cos I now how much sisters mean I truly hope all goes well.
You take care
redtail