It's all part for the course- just try to get the " happy,sad,bored" thing out of your head because she is not going through all those human emotions or " thinking" as you doyes she's with us forever the last piece was making sure she wasn't FIV/FeLV positive because we are moving soon into a house with other cats (which will be its own whole thing, i know) and thankfully she's negative! i just worry about her happiness/quality of life now; she's moving around so much less than when she was living outside and she seems grumpy/sad when all she does is lay under our bed all day
She is in unfamiliar territory,it's safe to come out and explore when she " hears" nothing around and sees no potential threat UNTIL she establishes this is her territory,it is safe and all the movements,smells,sounds and sights will be of no consequence....it's better to be unseen and remain hidden as it us safe- see?
First and foremost it's " survival"- animals behave instinctually in the way that ensures the species survival,they are not people,they are animals...they do not think and reason as we do(eg":gee,it was so much nicer outside",or " wish I was outside")....Nope,it's what they WERE familiar with- they don't sit around thinking of those things Cats spend 75% of their time sleeping
After she's relaxed & comfortable in this strange unfamiliar environment she will then take interest in " you" and get curious about what you are doing etc etc and her personality will re-emerge....her past is remembered no more,they live in ""the now".... in a feral state they exist each day to survive- in a loving,safe home they live a good life,without fear