I realize there are plenty of stories out there about “buyer’s remorse”, so to speak. It’s good to keep in mind that those stories are the reason transitioning is such a lengthy process and the waiting lists for gender reaffirming surgery are so long in most countries practicing Western medicine (I emphasize western here because I am not an expert on how things are done world wide).
Before being trans was something that could be discussed openly with a physician, before we had these multidisciplinary teams to help trans people work through the entire process, people were left to their own devices. Which meant that people would sometimes just travel abroad specifically for surgery. I’ve had several patients that traveled to Thailand in the 80’s or 90’s to get gender reaffirming surgery because they couldn’t get that here. In this situation, when you can just order a surgery a surgery without the lengthy process of assessments and counseling, and an added language barrier, being informed thoroughly and understanding the ins and outs of the surgery becomes more of a problem. I feel like many of the stories we hear these days about people that got the surgery and regret it afterwards stem from situations like these, where a trans person shops for an operation abroad (sometimes under sketchy circumstances) rather than a full transition care process, because the full transition care process wasn’t available to them (for whatever reason).
You can be sure your sister won’t be operated on unless her healthcare team feels like this is what she really wants.