@Steven1143 A lot of people decide to start hosting because they have the false notion that it's easy money.
What I would suggest is that you snooze or delist for awhile, and read posts on this forum for awhile to learn what other hosts do to protect themselves from this sort of damage.
Then you can figure out if you'd like to start hosting again, armed with some knowledge of hosting tips.
I just rent a private room/bath in my home and I have never had any bad guests. Quite the opposite. Personally, I would never want to list an entire house if I didn't live right next door, it seems quite a stressful job to take on.
Taking long term reservations is really risky- as you found out, Airbnb only guarantees the first month's payment. And guests become tenants in most places after 30 days and it can then be hard to evict them, as they then fall under landlord/tenant laws.
Also you need to communicate sufficiently with guests when they request to book so you have a chance to look for red flags. New hosts shouldn't use Instant Book, IMO.
It appears that your awful guest no longer has an account. Either Airbnb banned her after you sending them photos, or she deleted her account.