Uninviting my mom to Christmas

My son called me last week really upset saying that my mom called in a wellness check on him. What she told the police was he was apparently doing blood sacrifices or something and she could tell he's mentally unwell. I called my mom and she asked do I watch my son's tiktok. I said no and I didn't even know she had tiktok. She said my son is on there talking about blood sacrifices and giving his life to Satan. I go on my son's tiktok and.... He's talking about different Gods. Greek gods, Norse gods etc. The only thing that mentions blood sacrifices is he talks about how some people worshipped certain Gods. He sits in a dark room lit by candles and talks in a dark voice. It's weird but nothing I watched said he's gonna harm himself or someone else which is what a wellness check is for. I told my mom unless he's trying to harm himself or someone else you can't call a wellness check. She says "Well how do you know he isn't wanting to harm himself. Maybe this is a sign." I said flat out "Do you not know your grandson. He's always been into weird shit." Anyway he called me again today saying my mom sent another wellness check to his house and this time she just made up a bunch of stuff and now he's not coming to Christmas if she's there because it's becoming invasive. I called my mom back and asked WTF she is doing. She said it's a sign that someone is spiraling if they make a drastic change. I asked what drastic change and my son posted a tiktok about getting his first and he got a tattoo of Lilith. However how she chose to phrase it to the police was he posted a tiktok of him self harming. She considered him posting pieces of him getting his first tattoo him self harming. She also considered him posting his 20th birthday party wanting to kill himself because he made it funeral themed. Even though the joke was a goodbye to his teenage years but she considered that talking about suicide. I told my mom she's gotta stop. He's an adult in college, not a little boy and she's being very invasive. She then calls me a bad mother for seeing my child acting out and needing help and not doing anything about it. I told her that if she can't learn to respect boundaries she can't come to Christmas. Now I have a bunch of family on my butt about it and saying how horrible I am for inviting my own mother. I didn't say she was invited. Just if she kept this up she's uninvited because I much rather have my child at Christmas than her especially when she's doing something that is making him uncomfortable. People are saying she's just following her beliefs and trying to save him but not literally save him, in a religious sense. I said I don't see how calling a wellness check on him is gonna make him gravitate towards any beliefs. End of the day he's an adult!