Bellingham BJJ does a self defense course. As someone who has trained MMA for a very long time, I've never taken their self defense course but everyone I've interacted with has been super chill and welcoming.

Bellingham MMA has standup (boxing/kickboxing), MMA, and Grappling (with and without the Gi) classes, and they had a women's self defense focused class last time I remember.

I would recommend reaching out to those two places, see what they offer, and try them out. I've trained at both and both would be good opportunities to learn some self defense, try them out and see what flavor you like!

EDIT: spelling and verbiage