I won't speak to whether the hints were subtle or not, mainly because the way you've written them they seem clear enough, but hindsight is 20-20 even if you're Maritsa and you don't have Park's glasses.
OPTION A
Go back to the manager and (awkwardly, because we're LIIs so it will be awkward) tell her:
- That you know the conversation was difficult for you both,
- You still really enjoy your work,
- You're sorry you didn't work out at that specific library but that you'll be trying to improve, and
- She should feel comfortable to give you feedback.
First point is to let the manager feel safe - you're not gonna like shout at her or accuse her of being unfair. If she feels unsafe then she may say something upsetting to you which she doesn't mean.
Second and third point is because I think a manager prefers an earnest employee cos those are harder to find. Hopefully this will buy a few extra lives in case you slip up again in the future.
Fourth point is to hopefully encourage the manager to be really explicit with feedback. On their end, she may have previously felt uncomfortable pulling you up on things you didn't realise.
OPTION B
I would be upset and my self-esteem disturbed. I wouldn't feel comfortable going to the manager to say all that was said in Option A. I would probably write an email or something just because I think it's something that ought to be done. However, I would probably need warmth and friendliness and general closeness with someone to help me feel less uncertain of myself. That could be here on 16types, or it could be other people you know?, but hopefully they would help to build you back up.
And then you'd probably best think of some 2D Fi rule to make sure that this doesn't happen again, like I discussed above.