From a Tucson local after their 1st RFTS stargazing event in January 2023 (Reddit):
Y'ALL seriously have to go. Its pretty neat. My husband and I went to the last one. Do we know anything about astronomy? No, and you don't need to. They will show you and teach you and encourage you to be present in the moment. This isn't just something really awesome to learn and share with your friends and family. There is a really beautiful mental health component to it. I have legitimately not shut up about Reach for the Stars since finding it. You're going to meet some cool people and see even cooler things. I hope this finds the people it needs to like it did for me and you check the next event out! This would be an awesome thing to bring your mom to. The drive in is very tame. Totally drive a up and there it is, you can't miss it, walk right up to it type thing. It is in the parking lot of the trailhead with no hike in to anywhere. There are porta johns in the same parking lot. The area is well maintained dirt. Well enough that I, with walking/ balance issues, could navigate in the semi dark with no difficulty. Since the event is happening at night be prepared for cooler weather. I dressed to be warm, with a jacket, hat, gloves, and brought a blanket to wrap myself in. I get cold very easily though, if you don't I might seem excessive but it is cooler at night. Bring some water or a hot coffee. I wouldn't bring any kind of flashlight as artificial lights are a no no and ruin the viewing experience. They provide enough of the appropriate kind of light needed. It is so casual and approachable, you're both going to love it.