Oh Winston
for you and Tabitha
This is the exact same way Puddles reacted when Snowball was PTS
. She was 11 weeks old when we brought her home and Snowball was 5 years, so pretty much her whole life was spent with him.
It took 6 months for her to stop meowing for him. Their "time together" was in the middle of the night, and that was when she did most of her meowing, We (as in DH mostly) would get up and walk her around. She loves it when he puts her on his shoulder and walks around
and this would settle her down.