Need advice for a memorial piece

I don’t want to go into too much detail. But I started important, life defining medication 4 days after my girlfriend passed away to a suicide attempt.

That lives with my everyday because I often feel like an ass. Like if I just had the balls to start even a week earlier. I’d get to share the news and joy with her. I think about that a lot.

I inject the meds into my thighs and always wanted to get the site tattooed (save like 5 seconds every time I tattoo that thigh) (I oscillate sides so won’t have to inject a healing tattoo).

I was thinking about memorizing her by having a tattoo for her on the injection site. The goal was to always have a patchwork leg sleeve with a past/present motif. And I’m mainly worried that I’ll regret the piece cause it would make me too sad.