Hi Kris
Firstly, very sorry to hear of your loss, you have our sympathies.
OK, lets talk about drawing - well, the first good news is that basic drawing supplies are not expensive, because practice is an important part of improving, and its good to get into a frame of mind where no individual drawing is that important - its not a big deal if it has problems, and, even with the good ones, if you can do it once, you can do it again

Drawings really about training yourself to compare what you see in your subject, with what you see in your drawing, and then adding to, or correcting the drawing to bring it as much into line with the appearance of your subject as you can (this would also be true if you were drawing from imagination, or in a deliberately stylised way, for example doing a caricature - but trying to draw real things in front of you reasonably accurately is a good place to start).
I'd suggest that it would be a good idea to post some of your drawings here, let us see what you are doing (and tell us where
you think you are going wrong), and we may be able to make particular suggestions and offer help. Don't be shy, as the regulars here are very gentle and supportive.
I'd add that some degree of anxiety is very common, even in people who are very experienced - "can I make
this one come out right - my last drawing was good, but what happens if this one isn't?" I think most of us know this feeling. I think it tends to dissipate if you can actually just make a start, settle into the
process of drawing. There are specific technical approaches for getting proportions right, and for doing shading, and these can be applied in an organised stepwise manner.
Also, check out the tutorials here, and the challenges.
Dave