Hi, Bobby.
Ask the vet what to do about times when
-- you realize Abby didn't have her pill the day before
-- you are not sure if she swallowed it.
Specifically, ask her if it is ok/better for Abby to have a double dose of that stuff.
Also, tell the vet Abby is too feisty for you and you are having trouble pilling her. She might have some recommendations. She might even be able to teach you, on Abby, how to pill her. I think it will also be sensible and fine to tell her that sometimes pills get lost and ask if it is possible to have extras.
I am sorry this is bringing back the pain of losing Hammy and Pumpkins.
love
waves