I have Fidelity account too. I’ll bet you already use My Voice Verify. Leave/get standing wire orders with them before you leave. If you have a Skype local number there you can just call in anytime and initiate a wire to your bank here in Thailand. Easy and cheap.
Until they get behind the wheel of a vehicle. Then they are the only person in the entire world. FFS. Want to stop in the road? Sure. Turn left turn right? Any time anywhere…. Never a thought for anyone but themselves
I’ll tell you one thing. It will not be easy. She needs strong ties to Thailand. Great job, home or business ownership. Previous foreign travel would help.