Is it flirt when my friend that is a girl unexpectedly holds my hands interlockingly and slept on my shoulder when she barely responds to my messages?

Unexpectedly grabbed my hands, did so
more than once.

Held my arm in her lap once, holding my
hand with both of hers.

She slept on my shoulder without falling
asleep even though she was tired.

I know she is comfortable with me but is she just a good friend? Even as a good friend, why doesn't she respond very
much?

It’s also not like we see each other often, we live far apart and probably won’t see her for a few weeks or months.
Is it flirt when my friend that is a girl unexpectedly holds my hands interlockingly and slept on my shoulder when she barely responds to my messages?
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