That's definitely a bad idea to invite them to tea:
They know you saw them
They've got permission to enter you house
You are giving them food!!
It sound like a recipe to get your daughter stolen from you, or to have your house falling down on your head, or losing your mind or straight being skinned you and your family.
Carefully go back so they don't know you saw them.
Do not ever speak to this to anyone, not to your parent, your neighbour, your child not to your SO, not on the internet or your diary and lets hope you don't speak in your dream.
I'm fairly certain, with no proof to back this up I am willing to spend the time gathering, that we aren't reading enough into the origins of the european cryptids, tho
Tbf, the Europeans have some pretty fucked cryptid lore, it's just that they're more chaotic neutral and less chaotic vengeance than the American variety. My favorite american cryptid is an old one you don't hear much of anymore, and was born from Pacific NorthWest loggers: the Hide Behind. Basically, this mf stalks your shit and will always duck behind a tree when you turn to look at it; it's fast enough to never be seen clearly, but you can just catch glimpses of it if you're fast/lucky. Eventually, it catches and eats unwitting loggers who let it sneak up on them.
Edit: I also like the deer stories. One of my all time favs was a free text about a deer stumbling up the street very clearly saying "BEEP BEEP BEEP" like a car being unlocked, followed by "Honey, I'm home!" over and over. That was the whole story, just a weird fucking deer stumbling up the street and talking to itself. 10/10 would gladly read again.
America's got some goofy cryptids too. Like the hugag. A large, moose-like fearsome critter with a big floppy upper lip and no elbows or knees. Unable to lay down or kneel, it can only eat bark from trees around the height of its head, and it can't lay down to sleep so it leans against trees, sometimes causing the tree to lean.
If any cryptid out there actually exists, my bet is on bigfoot just because it would be the most mundane, boring thing to be proven real. Just a big ape? Fuck that. I want the Dover Demon to be real because it's actually interesting.
M14 with what looks like a 10 round mag using a cheap 10x60 optic? You are most likely a Californian or Canadian using an ineffective firearm against cryptids.
Real Americans use a drum fed semi-auto shotgun loaded P++ .50 caliber deer slugs or a 30-06 cal AR-10 with 25 round mag using a magnified Trijicon optic.