New here, hopefully someone can help me out a bit.

I started talking to a girl I volunteer with at a local EMS agency and we kind of hit it off and I started to feel like she was interested in me. We don't usually work together but were stuck there for quite some time due to a major winter weather event. After that we ended up working a few regular shifts together. Around then we also started texting each other a lot. I mean almost all day for a month, thousands of messages. Mostly standard "how was your day" type stuff but it would get a little flirty and she would occasionally bust my balls a little. The biggest problem I was running into was her schedule. She's a nursing student and does a lot of other things. Despite being very busy she would still talk with me via text all the time even while in class. She also pretty much gave me a pet name to call her that stemmed from an encounter she had with a patient.

2 weeks ago we went out to a movie which was the first time we spent together outside of being at EMS. That went well but I pussed out at the end and just went with good night instead of going for a kiss because I was afraid she would push me away (lack of confidence is a huge problem with me). I had also asked her if she would like to go out again some time and her response was "when, I don't really have any time". I told her whenever she felt she had time. The next couple days she avoided talking to me a little and when I asked if we could meet to talk she said she didn't want to because she was really stressed out and didn't want to say something she didn't mean. A few days after that she texted me and apologized for how she had been acting and that she was really stressed. Then she followed up with the following message, "Right now I cannot deal with being in a relationship, I tried to see if it would work bc you seem like a really nice guy. I don't want things to be awkward between us bc I do enjoy talking to you, and I'd be happy to hang out as friends.". Since then I have tried to tread lightly and only texted her a few times and she's said she's been busy. It was also her birthday the other day and I sent her a Happy Birthday text.

Most of my friends have said that she's probably being truthful about the stress from nursing school and not using it as an excuse. I really feel like we had a connection and I don't mind if I have to wait to move things along with her since I'm not just trying to hook up with her, she graduates in mid-May. I'm just not sure if I can pull myself out of the friend-zone and I'm afraid of totally screwing things up if I try. The added complication is that she said she would be my date to a friends wedding at the end of May and I need to confirm if that's still going to happen. We're scheduled to work an event together tomorrow morning for a few hours and I want to avoid it being awkward so I'm not sure if I should even bring up anything that has happened. I do need to find out if she's going to the wedding with me just for planning purposes for my friends. Any advice on where I should go from here? Can a salvage this situation?

Go straight up to this chick. Look her in the eyes and ask her out to the wedding. Maybe you can escalate things from the wedding. If not, you will at least have a girl with you, and this will give off a good impression to other girls and maybe get them interested. Mimetic desire.

So, she said she'll go to the wedding with me but that's at the end of the month (and specified "as a friend"), plenty of time to possibly screw things up. She'll be finished with school by then so hopefully the stress will be done with. Any suggestions on what I can do between now and then and at the wedding to see if she's even interested in a relationship or dating again?

Nothing, if she is it should come from her. Else you will make her feel more important than she deserves to feel.

What happened else?