You should apologize for losing your cool and yelling at her, by phone or in a written note - no texting or email.

Let her know that you value your relationship with her, but you are an adult (regardless of your accident) and would like to be treated as such.

I agree with scarlet and that you should probably take the bigger step and apologize first; however, make it known that while you are sorry, you appreciate her checking in on you but that it is a bit overwhelming and that she should keep it just to that "hello sweetie, how is your day going?" kind of check on. As a mom I can understand the scare and wanting to check in on her child after such a situation - but there are also limits and boundaries.
Thank goodness you are okay. I hope everything gets resolved quickly for you.

I agree. Reach out to her, apologize. Here's what I would do. I would go to dinner or have coffee with her, someplace neutral, where it's relaxing, and just say, very factually, without getting emotional or being argumentative that first and foremost, you love her and acknowledge that the experience of your accident must have really affected her. Tell her you're ok though, tell her what you need from her. And then let her talk, let her share with you what she worries about, what she hopes for you, etc.

I went through a similar experience with my husband, after a life threatening situation nearly killed me. After I was home and trying to just get my own head around how freakin' scary it is to almost have died, my husband was very over protective, wanting to drive me everywhere, wanting to know when I was leaving work, where I was going etc. It drove me nuts and our relationship really was a struggled during that time.

Finally at some point, I grasped that when you're going through a trauma, so is everyone else around you, and in some ways it's worse for them than for you because they feel absolutely helpless and useless. And so the only way not to is to try to take control. It took a conversation with my husband, like the one I recommend you have with your mom, when he was relaxed and had his guard down a bit. He said, you have no idea what it does to you to watch the person you love being worked on by EMTs, loaded into an ambulance and rushed to the hospital, watching docs in the ER working on you, and then seeing you in the ICU hooked up to machines, everyone telling you how lucky it is that you are alive. He said whenever I left the house, he was afraid it was the last time he'd ever see me. I had no idea he was so troubled by things and I think once he was able to articulate it, rather than acting it out by being controlling and hovering over me, he sort of was able to relax finally.

I don't know. It's ok to be firm with your mom, but do it with kindness, and make sure you hear her.

Glad you're ok!

Also, if she was like this before the accident, then I think the same approach might work but it's probably something you'd need to constantly reinforce, sort of like dog training. I know... it's wrong to compare managing overbearing mothers to dog training, but if the collar fits...

You can't control how often she texts you, but you can control how often you respond to them.

I would just tell her that you love her dearly however it's important that you both have your space and that you want to enjoy her life...
If she needs some time to get over the tiff give it to her...don't let this be a manipulation to go back to more for the same...xo