I like this, esp when looking at some of the fuel and cost savings:
4 × electric busses: approximately 32,000 gallons of diesel fuel on an annual basis
4 × electric waste disposal trucks: 78% in fuel and maintenance costs
1 × electric box/transport truck: 64% in fuel costs
Hopefully this leads to less in property taxes soon amirite guys 🤣? (I know that's a whole nother issue. I'm still down for this pilot).
This may be overly cautious, but I recommend making a log and gathering evidence for if/when this escalates further. Keep in mind that at 17 she is still a minor, so there is an additional burden of responsibility that is imposed upon you and your partner in every interaction you have with her. Get dates, times, and statements from your brother and partner on the 2 occasions she entered your home and slept over, in particular. The last thing you want to deal with is a false accusation from this kid who does not seem to regard nor respect your boundaries, which you have set clear at this point. Get security cameras. Document everything ongoing. I personally wouldn't block her texts for now.
Next step is to inform her legal guardians, in this case her parents, that she is not welcome on your property nor to contact you or your partner. I would do it in some form of writing - email or text, again for the sake of evidence. At this point the responsibility for her actions shifts to them. If she is on your doorstep contact them directly and expect immediate action. You can also inform them that you have concerns over her mental health.
Once these are done, you have real actionable choices that you can take. I know it sucks having to feel like a bad guy in this scenario, but it sounds like she needs professional help. Her parents are the ones to blame here.
"I'm not like the other brains"
Sounds a little like a torture chamber to me with my tinnitus.
I hope you are doing ok. If you are in my old situation, know that you aren't alone.
I'm casually observing a lot of this with friends. Met a very accomplished lady recently who shifted from working in the investment banking sector into getting her licensing and a private practice to be a therapist. She worked her ass off with education and multiple part-time jobs to get her to where she's at. Shockingly, she is a mommy-wife to a guy who doesn't want to commit to marriage.