In my eyes, a subplot is a smaller story running through a bigger story, be that larger one a novel or film or TV series. They're good things, and I have plenty in my current work in progress. Where I'm coming a little aground is more of a plotette. My novel is, essentially, a tragic love story, and in it I have a situation where one of the characters is injured and there's much hair pulling and uncertainty about what's happening with her because they can't get in contact with one another. My problem lies in that once that injury is done with, it's done with and it feels like I shouldn't include an element that springs into the novel for only a few thousand words before being solved and letting the plot continue. I feel like it adds conflict, reveals character, all the things a good subplot should do, but it just isn't big enough for that label and I feel a little silly including it.