Well, I call mine by her name. But also she has two entries in my Contact list.

One that I created when we met many years ago.

And another one for the secondary number/phone she got secretly, before she was diagnosed with mental health issues and started taking the appropriate medications.

I won't give out the exact details of the alias she created for her crazy secret life... But here's the photo I used for that Contact entry.

This ironically became her primary Contact entry, as her other phone was older and the newer one was never actually a secret anyway, she just didn't know I knew about it, and she didn't need two phone's after she got her shit sorted out.

But I've left that as her contact picture to ensure I don't ever forget who she could turn back into if she stopped taking her meds regularly.