My son's travelled alone with 15 years and Thai airways wanted a confirmation from me that he allowed to travel from Frankfurt to BKK, even when I bought the ticket they told me not necessary! Never was a problem when travelling alone with my kids.
Don't write bullshit, she is 62 years old, her son is an official teacher in Thailand with work permit, she will never get denied at entry like nobody in this age, you can travel regular to Thailand if you have a reason, even every week, you never get denied. Don't scare people when you not have personal experience and proved evidence about whatever you posting
