Gentle way to tell friend I’d appreciate her being more prompt about texting to confirm plans

I have a friend who is absolutely terrible about texting back. It’s not just with me - I know for instance that a guy she was starting to date broke it off, citing this reason.

For the most part I’ve tried to accept it. I don’t care if it takes days or even weeks for her to reply if it’s just to a check in “how are you?” Or “happy birthday” type text. If it’s just in response to a meme or an article she might find interesting I don’t care if she never replies at all and I try not to bombard her with those.

It really starts to frustrate me when it comes to making plans. I don’t think I’m extremely type A but compared to her I’m way more of a planner. I want to have dates locked down so I know whether I should turn down plans if other people reach out.

For instance, she has texted with me about driving a short distance to my city to stay with me for NYE. It’s just a few days away and I’d like to know exactly on what date she’s arriving / leaving so I can buy food that she likes and clean my apartment. She hasn’t texted me back to confirm a date (or even that she is for sure coming since she mentioned that she wants to come, but isn’t sure whether car troubles will prevent it).

What’s a nice, constructive way I can tell my friend that her hands- off communication style is frustrating to me when it comes to making plans?

Additional info: she is very smart and one of the kindest, most giving people I know, so I don’t want the answer to be to just cut things off and go no contact. She shows that she values my friendship in lots of ways (other than responding promptly to texts) but the difference in our communication styles really stresses me out sometimes. This has been a problem when it comes to other plans. Once we are actually hanging out, we always have a great time. As you might guess, she is extremely chill. We both love to explore new places and we’ve even done international trips together before.