My (29f) mom (65f) invited herself to my bachelorette party, how do I *kindly* uninvite her?

My mom overheard me inviting my cousins to my bachelorette party in February and asked when it was, saying she will come up for the day.

Now for some background, I love my mom dearly and we have a good relationship, she is helping so much with the finances of the wedding but hasn't been an overbearing mother of the bride. The bachelorette party is non-traditional, my wedding party consists of 5 people but my bachelorette party I included 'the women I would have in my wedding party if I had no budget'. So it is 14 people including 2 of my cousins. My mom heard me invite my cousins, who are both in their 40s as there is big age gaps so I think she thinks it's cool if she comes. I told her yes that's fine, bc I didn't want to publicly say no and embarrass her in front of my cousins. But tonight she mentioned it again and thet she's invite my aunt too, and I know I need to address this before she mentions it to my aunt.

Again, I love my mom so much but there is a side of myself (the drunken, cursing, goofy, 20 something side) of her I don't want to see and I also want to be able to totally relax and let loose on my bachelorette. My sister agrees, so do my bridesmaids, that this wouldn't be the trip for my mom. I think she has wanted to go to where the bachelorette is planned for and sees it as an excuse to come up, as it's not somewhere we need to fly or overnight travel but it's a 2 hour drive and a 40 minute ferry ride away.

We were going to go camping, sight-seeing and bar-hopping around a lake, nothing crazy like a city or stereotypical, but I am not too pleased to have my mom crashing. Can anyone help me come up with a talking point for this situation? I'm thinking of saying "lets do a mother-daughter trip instead" so she can be included and have fun but not tag along for the bachelorette.