There is hope, but it is not an easy path.
My background was always active. I was in the scouts, I played active sports etc. so I am always interested in going places and doing stuff.
My wife had a much different background and during school she went on two camping trips that turned her off camping forever. Both involved lots of water and one ended up with her having pneumonia. The other involved an emergency evac of the campsite which was in a riverbed in the Flinders Ranges. These were clearly poorly run trips, where the teachers were lacking skills and experience. End result: Not a happy camper!

It took me many years to wear down that history, but now we have done several yearly car camping trips into the outback, camping in a tent, cooking on fires etc. She has learnt that the problems on her school trips was not camping per se, it was the planning and skills of the teachers (who were probably forced to go along regardless of their abilities)
The transition happened slowly. It involved me going places and bringing back stories and photos. Eventually, we planned a trip that was mostly hotel based with only a couple of nights camping in a remote place with zero facilities during which yours truly was the camp slave. I organised a private toilet which was the major stumbling block for her agreeing to a couple of days away from civilisation. Everything went well apart from my exhaustion at the end of the trip.
I know how the trek guides feel at the of the OLT! We've moved on from there and things are a lot better now but it is fair to say that she wouldn't go on her own steam. She freely admits to enjoying the trips though!
My next goal is to move from tent to swag. Wish me luck!