I take it you have never been married. Doctor appointments, especially these types, are very personal. You can ask her if she will let you talk to the doctor but usually the answer is close to HELL NO. The OP has control of possibly 1 thing and 1 thing only. That is the hospital that she goes to. As all doctors speak English, I wonder where you live. I live outside Rangsit and can tell you that, yes, they may speak it and know the terms, but conversation in some government hospitals is not that great, as they only see Thai patients with the odd farang thrown in. My doctor loves my visits because she can practice her English