So sorry to hear this, I lost my first piggies 10 years ago to a fox, and it still makes me upset thinking about it. I hope you and your DC are OK and that they manage to enjoy their day a little bit. Thinking of you all x
It does take time to get to grips with (I won't say get over because I know even now I can't read my thread about my GP2 without being )
But it was one of those horrible incidents that you really cannot predict .
Last year I was going to leave my hogs out in their run while I dived out to pick the DC up. About an hour or so. I couldn't catch them. Then I read a post about someones GP being fox-caught in the middle of the afternoon . Pig was scared but got away. I went out, got the hogs (don't know how I managed, usually DD gets them).
Bless DD and the "big adventure". I worry about DC and animal death, it's sometimes the first breavement they experience. Hard for them to grasp it's final.
He sounds like a lovely caring BIL. It is a typical bloke reactions but as you say, he clearly means well and is obviously concerned about your DD's being upset which is very sweet. It would probably feel a bit soon for me too but possibly not for your DD's. I'm sure once you get home and see the new arrivals, you'll fall for them too and be dashing off to stock up on parsley and cucumber.
Your BIL was thinking of your DC I'm sure but it's a bit naughty of him to do this without your say so.
The letter is sweet, very touching
New guineas take a little while to get under your skin but as they settle in you'll love them just as much as Salt and Pepper. When they leave a hole in your heart there's another little pig waiting to step into the role of Resident Rodent.
You can't do anything now but give BIL a metaphorical smacked bum (and line him up for guinea-pig sitting duties when you're on holiday)
I went through similar when GP2 died. He was the sweetest guinea-pig ever (actually my DS pig but DS wasn't bothered. DD and I do the pigs between us)
GP3 is a new character ,he's gone through his own Rescue and Rehome upheaval and of course he took a while to settle whereas GP2 would automatically tuck under my neck.(Though he was the stinkiest pig in the world)
Embrace these 2 new bewildered little piglets. They're dependant on you now. But yes, you'll still be for S&P .