They were definitively there Wednesday. I can't vouch for more but it means that they were absent for at most three days. I reacted strongly because your "one week" window was a lie. I will certainly not get into the way they live their life and whether or not they should have a cat.
How is that rude? I don't know what to say to you. I have seen them multiple times this week. They even had a guest one night who slept on their bed in a sleeping bag. They have super weird schedules (and are very weird in general) but they are not away for nearly as long as you suggest.
They're all in Russia except
Irma & Co + Lola & Co + A&D + D&R + C&S -> Spain (All in Barcelona, not 100% sure about C&S)
A &K + V &T -> Czech Republic
S&H -> Bulgaria
Masha & Sasha -> Italy
That's correct they were visiting very often as a couple, her girlfriend was a brunette with short hair. I believe that at one time they considered a partner swap because Kira was kissing the brunette in the bedroom while Nina was cosy with the gf on the couch but it didn't happen and I think caused a big argument. All 4 also played a kinky board game on night.
But they would also be ussr sleeper agents who would wait for the order to kill you in you sleep and assassinate the president. Bah nobody is perfect I guess...