the text you share here is probably old. The other article is new and since it wasn't announced I doubt the rule has find its way to pages like this. This Google thing is known to lag a little. And the same rule existed until July 2024, hence why I think this text is from then.
embassies are indeed the go to place for questions like this, unlike what is often said that they aren't related. They are very related. But, they are also known to make blatant amounts of errors. Here they're not correct.
with a visa the entry eligibility check is done by the Embassy, so you don't first fly to then find out it was for nothing. I don't think it's necessary though.
Oh and read your post as if you meant visa exemption. If you have a visa you are not supposed to get denied. The primary purpose of a visa is entry permission.
nothing resets unfortunately, but what matters is how long she stayed in the country. If that's only 91 days in the last 12 months, it's similar to one maxed out entry. Very safe.
Not really, with 91 you're well within the safe zone.
Many not so great answers here also. I mean "there is always a possibility" yes and there is also a possibility that lightning strikes you but it's not something you'd need to factor in.
To get the money out of Thailand again you need to have it transferred in properly before buying the house. You must use an international bank transfer. So the most important implication of that is that you cannot work in Thailand and then buy a house; if you're a foreigner you can either work or buy a house but not both. Another implication is that you can't use services like Wise to get the money in. They use partner banks to send the money to your account, and it'll not be classed as an international transfer. You must use a bank to bank international transfer.
Technically you can also not buy if you don't satisfy the said condition, so you won't have an issue being able to send the money out again.