Overall I feel this was a good effort, but i've got some tips I hope will help in the future. I felt what those shadowy figures directly represented was a little unclear. I get they are anxieties or whatever, screwing her life up, but I think you need some more clarity in what exactly they were doing to her. I understand you don't want to hand feed us the message, but there were points I wasn't even sure if they shadows were supposed to be antagonizing her or helping her, and overall, they didn't come off as nearly as much of a threat as they should have if your intention was to show it drove her to suicide. As everyone else has been saying, the glorification of suicide is super weird. I don't know what you actually intended with your ending, but assuming this was an anti-suicide message. Well, the ending you had is fine I suppose, but instead of making the ending all YELLOW TRANSCENDENCE, the final shot should show the actual suicide, and perhaps the impact it may have had on everyone she knew. In part, if you made the shadowy figures more clear, this would give more power and meaning to your ending, especially if this is anti-suicide. I don't mind the glorification of suicide to simulate someone who has depression or some other similar disorder, HOWEVER, I think you should put more focus on the fact that it isn't the right answer. The final shot should definitely focus on the tragedy and not the escapism.
ANYWAYS, like I said, it was well animated and composed and I think it was a good effort. I think just work a bit more on clarify if you want to go for these deep wordless type narratives.