I met RivkA of Coffee and Chemo at the first Jblogger conference organized by Nefesh b'Nefesh. I met her a few times since in other contexts and she is always optimistic and cheerful.
RivkA has been hospitalized and needs our prayers. Batya has pointed me in the direction of a Tehilim group. You can sign up to join in saying Tehillim for her recovery at this link.