UPDATE: She learned about the post and called me saying that she wanted to cut all ties... Did I overdo it?

I'm a 24 year old woman, and I live alone in a small apartment. I have a close group of friends but there's one person in particular who has been causing me some issues recently

She and I have been friends for a few years, and we used to hang out a lot. However, over time, I started noticing some behaviors that made me uncomfortable. She’s always been a bit of a free spirit, which I don’t mind, but she started pushing my boundaries in ways that weren’t okay.

The main issue is that she constantly shows up unannounced at my apartment. At first, I let it slide, thinking maybe she was just being spontaneous, but it started happening all the time.

She would just knock on my door without texting first, expecting me to drop everything and hang out. If I wasn’t home, she’d often leave a note or text saying, “I was just stopping by to see if you wanted to hang out,” which felt pretty intrusive.

I finally told her that I needed more space and that she should check in first before coming over. I even said it as nicely as I could, explaining that I’m an introvert and sometimes need time alone to recharge. She was upset, but she said she understood. However, last week, she showed up at my apartment again without any warning.

I wasn’t in the mood to socialize and had some work to do, so I politely told her I was busy and asked her to leave. She got really angry and said I was being rude and "cold."

Now, she’s been texting me nonstop, calling me “selfish” and accusing me of "shutting her out." A couple of mutual friends have reached out to say I should apologize and that I overreacted.

But honestly, I feel like I’ve been clear about my boundaries, and I don’t think I owe her an apology for wanting space.

AITA for not letting her stay and not apologizing for asking her to respect my boundaries?