Is my "friend" Narcissist or am I overthinking?

I met this girl online back in 2019. She starded to like me cuz she said that I read her like an open book. Our friendship took direction of me being some kind of therapist and mr. google, and she was always sad, always complaining, always in need girl. Our talking was based around her talking bout herself and things she like cuz whenever I wanted to tell something bout myself she was just saying things like "oh, that's sad" or not responding at all.

She was always in need for help and advices, she was able to (now I'm not scared to admit that) waste my time for 5 hours just to talk about how sad, miserable etc she is, how ugly she is, how she is bad at everything but when I was coming up with solutions to her problem she was like "meh, I don't do that". She complained about the same things for this 4 years. I came up with every solution, I was googling and doing research for her everytime cuz she was to lazy to do it for her own, I shared every piece of my knowledge to help her, I was connecting every dot to find almost everything that she may face but she was still the same. She is to this day. At some point I suggested seeing psychologist and getting diagnosed cuz I thought something with her is not normal (I'm not mean here, I really wanted to help and every possible solution seemed impossible for her). Everytime I brought up topic of seeing specialist she was sad and saying things like "oh, I'm scared, I will not do that".

Also, she always complained on how she want to get close to me, how she love me and that she is sad cuz I'm so closed on her and it's only her talking and not me. So i decided to do a couple of tests on her at the start of this year: I had bad time with Uni, I didn't pass exams and it affected me somehow and I started to show her my "sad" side to see if there will be any reaction. Surprise, surprise, she didn't reacted on a single thing I said, she went silent only to write to me after some hours and talk bout herself again. Also, I set a trap on her and told her something like "You don't even know how many times I was sitting there having panic attack and crying and yet still taking care of you and your problems" (it was true, not manipulation, I wanted to confront her with that, her response was "Ok, I understand. Should I blame myself? I don't think something happended to you because of this, so..." I asked her about her reaction to this and she said "I was stressed for two minutes but it passed" and she started to talk about her again. She dealt final blow to me yesterday, she send me a meme bout depression and wrote something like "You are always so fucking sad, when will you be happy, huh?" and this was... wow, this girl complained on how she want be close to me, and after my little traps that she ignored she responded with this.

Also, she never asked me bout how I feel and how my situation is goind.

Another thing: She is jealous of me as hell. Two weeks ago I played Valorant with some girl from twitter that seem to have similar intrest to me. I told "my friend" bout that and said that it was cool to play with her and we catched our vibes. She responded with "Mhm", went offline and when she came back she started to tell me that she is always jealous when I mention someone and when she see that I play with someone elese she is mad cuz it should be her, and not other person. After that, she started to follow this chick on twitter, interacting with her under this chick every tweet, rt her posts etc. And it bring me back memory of my old twitter account when I interacted with some dude, nothing more, just couple of comments here and there. After some time "my friend" also started following her, and at some point she send me screenshot where I could see that "my friend" was DMing that dude. Also, I remember that time when I had to take birth test (I'm in relationship since 2020) and she was mad at me because how could anyone touch me (even my bf, lol).

Also, I can recall that one time when I shared with her that I have tanatophobia and she said something like "Wow, this type of feeling doesn't sit right with you. I had different opinion of u and I thought that you are more than that."

And when it comes to our conversations: She just talk bout herself, she don't react to my things, she don't care bout anything besides herself and her complaining whole time about how miserable she is and how worthless she feels. She don't mind asking me to do research for her, but she doesn't take action from advices I give to her and at some point she throw a tantrum bout me asking her to start acting on things she want to change and constantly complain bout them and she said "Please, be so kind to not ask me if I did anything, I will do it when I feel time is right".

I also remember that one time when I said that I won't do anything more to help her and she is on her own. My PC crushed, I was reading manga, and when I come up online again I got 5 voice messages with her crying, two long messages begging me to not leave her, that she is nothing without me, that no one went this far with her cuz everyone abandoned her and how grateful she is to have me.

Idk if I'm just overthinking or if she is really a NPD person with self-pity, victim mentality attitudes.

Can anyone help me with this?