Hey, I'm having trouble googling this so I hope you can help. I'm writing a book where a fighter pilot crashes behind enemy lines and survives and is taken to a condemned mine.

Due to the high pressure, she has to wear a breathing apparatus. After some time they leave the mine get in a chopper and then a submarine.

Yes, it's over the top but who fucking cares lol.

Could the human body sustain such rapid excessive change in atmospheric pressure without DCS?

Would any tech like suits or chambers be quicker/safer?
34yo female 5'8'' high fitness
Crash to mine 1 day (over 100,000 to sea level altitude rapid descent)
Inside mine (3 weeks) with breathing apparatus. (can they eat n shit?)
Mine to sub 2 days (low altitude helo flight).
Is this too fast too slow? how fucked are her joints? Thanks.