Navigating Real Cultural Differences With Real Relationship Concerns

Any feedback, opinions, and thoughts on this question will be greatly appreciated … I have been involved with Japanese woman (on and off) for a few years. We are both in our 50’s (not kids anymore). I am American and she lives in Japan. We have met and spent time with each other many times, so she is totally “real” … However, it has been a real “learning experience” for me to understand the nuances of Japanese culture, especially what is said and the things that are left “unsaid” … Here is the background of my question: As I said, my Japanese friend is in her 50’s and has some health issues. Nothing serious, it would be considered a fairly “routine” surgery in either country. She had previously told me that the surgery would be scheduled for the end of June or July, but today (late Friday, Japan time) … she sent me a message that she would be going to the hospital TOMORROW for the surgery … AND … that she would NOT be able to message or even “look at” her phone for a few days. Now, I am totally NOT the jealous type as I learned long ago the important lesson that being jealous and possessive over someone is a “waste” of everyone’s energy – But, I also need to be clear that my Japanese friend has previously FORGOT to tell me about “other guys” in her life that she has traveled to meet with – until it was too obvious to deny. I also know that Japanese culture is such that she will be reluctant to openly discuss her exact health condition anyway …. This is tough for me as an American, but I also know that it is real from her standpoint. So, naturally, I responded with concern and empathy and asked if there was some type of “complication or emergency” that the hospital would now (somewhat suddenly) schedule her surgery to take place over a weekend? She sidestepped the question and simply said she would “be fine in a week” Out of concern, I replied with: “Is everything okay” …. With no response from her My question is whether Japanese hospitals would schedule “non-emergency” surgeries over a weekend? I honestly do NOT know anything about Japanese healthcare. Would this be normal? It seems quite sudden to me … such that … I am concerned that her medical situation may be more serious than she wants to share with me …. I do see this as part of her reaction as a Japanese woman. However, at the same time, the fact that her “downtime” commences at the start of a weekend and already has a “finite” one week duration …. makes this American guy “pause” for a moment – especially where she has been “less than candid” in the past. Seriously, it could be that some other guy will be in Japan to meet her OR she is going outside of Japan and will be in a different time zone …. Which is why she does not want to communicate with me I realize that this is not just a “relationship” question, but I am really curious if anyone has insight into how the surgery “thing” is done in Japan. Getting brought in a weekend seems a little odd ..