Tell her (with nice smile on your face) that she is beautiful when she smiles, but not so when she is mad, but that you love her anyway. Hug her and kiss her, it should work.
When you get back from calibration bring her favorite flowers (I hope you know what she likes) and tell her again that you love her and you love her smiling and nothing makes you happier than her smiling.
Hug her, kiss her and do it frequently; when you pass her in living room or kitchen, when you walk with her on the street or park, grab her hand when you walk with her, show her that you care about her and that you STILL LOVE HER.
Buy flowers frequently, once a week, remember about anniversaries and what she likes, show her that you think about her. Buy her small things but something she likes. (Again, I hope you know what she likes!)
Flowers every week do a lot more than diamonds once a year. And talk to her; women love when we talk to them.
Many years ago I heard something like that: Man fells in love through eyes, woman through ears.
And also listen to her when she wants to tell you about her day or problems. even if you think that it is silly
If it doesn’t help, if she prefers diamonds, fur coats and expensive cars above flowers, your company, and time with you, sorry but she doesn’t love you anymore.
