After reading the stories about her on this forum, I really wanted to contact her, make an altar and address her sincerely.
I have a few questions, the main one is about her sigil. Many people say it doesn’t exist. But many also say that this is her sigil and say that they get results with it.
If you have had any experience with Santa Muerte, please share your experience here, it would be very useful to me and many here.
Also, if anyone has any materials on how to work with her, please tell me.
The sigil is styled more like a vodoun veve. 
Personally I never used a sigil to speak with her. I didn’t know this existed and never looked for it . Sigils are from the Western grimoiric tradition, which Santa Muerte is not, so it doesn’t feel appropriate to me
She has such a strong presence she doesn’t need one imo I’d be careful if using someone else’s sigil in case there’s something else behind it than the original Santa Muerte. It’s probably more recent upg, and if you didn’t know and trust the work of whoever created it, why would you use it?
But keep your intention clear to contact her and nothing else and you should be fine.
My version of Santa Muerte is Lady Hel-whether they are one and the same is an argument of semantics. Far as I know about Santa Muerte links into Hispanic cultures and Dia De La Muertos. I think she like Brigid sort of got syncretised into JCI stuff because it’s easier to get people to convert if you say you have the same entity in your religion.
