"I'm all about experiments, me." = My whole personality is an experiment, I am an experiment.
I am one with experiments, I am.
The implication is, that she is happy with experiments, and has no problem entering into a relationship which may be experimental, untried and untested by her or the other girl before.
Attempt number 2:
This is one of those phrases which, when you hear it, you know what it means, but explaining it is hard.
I revise my opinion, and say: it means, ask me anything you want about experiments, I live and breathe them, and know everything about them.
I am all (completely) about (entrenched in/around the subject of) experiments, me (I am).
I am me. Is a redundant apposition. 'me' is I. I don't know Japanese, but in Chinese 我 wo (I) is also me. There is no difference between 'I' and 'me' A fact which gives us an interesting cross-lingual joke: wo (e) is me!
Attempt number 3: succintly put, she is saying, 'I want you'
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