Hey,
Bit of an odd one. I'm in a trio friendship. 2 of us are closer (me & Amber) naturally as our children are good friends & we have similar interests. (For context this is not an issue for other friend, let's call her Melissa. She doesn't particularly like catching up a lot etc)
So we're in a WhatsApp group together. Amber (who I am very close with) often goes quiet on the WA group. Says she's not feeling well or not slept well etc always something "up". She'll also be messaging me at the same time totally normal. I've often said to her oh let's leave it this if you're not feeling up to it... she never wants to cancel & is absolutely fine when I see her.
Sometimes she acts like she may not come to plans that involve all 3 of us or more people despite me speaking to her son already that day who says they are coming & Mum is fine & they're currently at Grandparents house. It's like she's chalk & cheese!!
I can't get my head round why on the group with 3 of us she appears different. To the point Melissa thinks Amber may even have depression & is oh poor Amber all the time!
I haven't called Amber out on it because I don't want to come across as uncaring or being blunt.