If it’s anything like the Mars 1000 trip by Reid Stowe then the science thing might be more for publicity than for actual usable science.

She's had no human contact for 500 days, so no samples or examinations. That process starts now.

I suspect they were actively monitoring blood samples etc.

I've looked through a couple of articles, and none mention any samples collected while she was in the cave. She'd have to draw the samples herself, and at regular intervals at that. It seems she had no means of orienting herself with time, or know how many days had passed since the last sample draw, if any. In theory the support staff could just add the sample kits once a month, for example, but I suppose the presence of the kit would be a time cue as well.