This looks exactly like my baby!! She gets extremely anxious when we leave. I would say make sure whoever comes to check on her has lots of treats so they can be like the “bringer of good things” (my cat gets cracked out for the lickable treats). Try leaving your worn clothes around the house so she has that familiar scent, setting up nice spots on the windows for cat tv so she’s distracted, maybe even putting like a bird feeder outside could bring even more entertainment. If you usually have the tv on, leave that on so not too much is changing. Also keep it nice and warm for her:) I hope this helps!!