It is, especially if you have thoughts that your actions, or inactions, caused something.

[She keeps the hand on Gareth for a moment longer before moving to let go.]

Those feelings are fine though; and normal. Just don't let 'em take over. And don't think you're alone in feeling those things, or that you can't do anything. No matter how small it is, or if things fall apart. [She should know what it was like to stand alone. To have everything seem to come to an end, even when it all seemed to be going well.]

...Things always work out in the end.