I (F28) think my shy coworker (F24) might be into me

(I hope this fits the subreddit) I just want to preface by saying I don't have much dating experience and am feeling a bit of gay panic.

I think this shy quiet girl at work likes me, but I need a second opinion because I don't really have any gay friends.

She has never initiated a text or conversation unless it has been work related. (stay with me here I know) However, when I get the conversation moving to being relaxed and friendly she does a bit of banter back and forth with me. I think we have similar personalities. She laughs at my jokes. We've hung out outside work before with a mutual coworker (D). D initiated the outing because he knew I was nervous to ask her myself. When he asked her he said "L (me) thins you're really cool" and she responded with "I would love to go!!" We ended up going to the movies together and having a really good time.

When sitting next to me she seemed kinda nervous but I might have been projecting. I feel like we smiled and laughed a lot. After the movie was over she said "I would love to hang out again!" But I don't know if I'm navigating a platonic friendship or something more. I didn't really get a chance to talk to her one on one at the movies and I'm too scared to text her myself outside work because it feels like I'm intruding. I want to be respectful of her space. But I can't help but think there is mutual feelings. She seemed to have tried a little harder on her appearance and put make up on at the movies. By her body language she seemed nervous sitting next to me.

But this week she seems a bit more distant. I don't know if its a shy girl thing but its like someone pulled the emergency brake. I don't know how to talk to girls obviously. We don't sit next to each other at work so I don't really have any opportunity to talk to her face to face. When messaging each other I like to think there is good back and forth with lols and emojis. She actually pretty funny.

At the movies she immediately noticed the day after my schedule changed at work that I was coming in at a different time, I think she knows I like video games because she tried to bring it up like she knew I'd like the conversation.

The biggest thing that sticks out to me making me question if she likes me or not is when we went to this work outing for bowling. During bowling she only clapped and cheered for me. It was pretty endearing. The Monday after that she seemed to continently find me on my breaks like hovering around my car or near the front door when I was coming and going. Probably hoping I would strike up a conversation. Sadly I too am a shy anxious girl.

Anyways, I'm just looking for some advice on how to proceed. I really would like to text her, but the last 2 days this week she seemed cold and distant. Might be a shy girl thing, but I also have been more nervous around her too so maybe she senses that.

What should I do?