Hi cpriestley,
Welcome to the forum although sorry you had to find it. Please ask any questions, share experiences or just vent, this is what this is for.
Shock is entirely natural. I was in a daze for a long time post-diagnosis. The best advice I can give at this stage is maybe to read a few info sheets on myeloma, what it is, treatments,etc and take things slowly to let things sink in.
Wishing you and your partner the very best.
Greg
P.S. it is a lovely picture – where is it?