Did you consciously direct the bubbles back toward her, despite (perhaps, in spite of) the hand direction, implying the intent to guide them? Or was that a decision made on the fly?
The bubbles are to represent the words we say, when things go wrong. When we feel like we drown further, the more we say until we have no air. Like bubbles, the things we say can be popped and destroyed, float away, but mostly her hand is trailing off so that what she says can reach who she is trying to speak too, with her words being cast back in her face. At least, this is what I had in mind. I didn't want to make it too prominent though, and leave it to interpretation, like any piece of venting artwork.
Our words often flood out in ways we can't really control; the flood just pushes someone further down, further away from their intention and further away from any form of goal they may have had in mind. Most of my venting pieces are in writing, though they generally meander and stray toward the implications of whatever it is I'm thinking about, masked of course by the elements of the story at hand. It's a bittersweet concept behind this; I enjoy the piece because I can feel empathy for the emotion behind it in certain ways, though I feel displeased that someone had to feel that way. I hope that whatever had you needing to vent resolves itself soon.