The Thai police would consider her taking drugs as consent.
Admission of taking drugs would probably get her 3-5 years in jail, so probably best she not shout about it too much.
If she owns the house, she will have a house book.
If it's rented to her, but she tells you it's hers, she won't have a house book.
Easy really.
There are no other possibilities.
House mortgage repayments Thailand = 9kbht.
Room rental in UK = 600gbp.
The pound would need to drop below 10bht = 1gbp before it would be too expensive for me to live in Thailand.
I would say simple common sense is to accept death when it comes, and not shovel money into the greedy hands of private hospitals.
As for the OP, walk away, it's not your problem.
The only place I found with a 24hr bar was Garden Village Guest House in Siem Reap.
Mostly backpackers in their early 20s, quite nice to have a 50c beer served by the pool for my 6am swim.
On the other hand, most of us don't have lives so dull we have to hang out in another countries forum.
When I left the UK, I stopped posting in UK forums.
Having extensively studied booze prices across Asia ..........
Cambodia, if you want to drink yourself to death in bars.
Philippines, if you want to drink yourself to death home alone.
Thailand if you want to smoke cannabis all day.
By 'serious life', are you taking about all the poor western foreigners that try to scrape a living here (unqualified schoolteachers)? IMHO best not to arrive until you've made enough money to live for the rest of your life.