איך אומרים באנגלית : "אם היא הייתה בחיים היא הייתה מאוד מעריכה את זה" ??

if she was alive, she would've really appreciated it/ appreciate it a lot.
happy to help:)

if she had been alive, she would have appreciated that a lot

if she was alive, she would've appreciated it very much/a lot