<human>: Can you provide a brief rundown of the text in within 3 sentences?

Hey all, some basic info:     
I 'manned up' and decided that I was finally going to make sure my crush knew I liked her. (I've liked her for over a year now) I surprised her while she was working. I used to work with her and often visit her this way, which she is fine with. Once our conversation began to slow, I told her that I had a late-Christmas gift for her. She gave the typical response, "Oh you shouldn't have because I didn't get you anything and now I feel bad". Telling her that I didn't mind at all and didn't expect a gift in return, out from behind me I pulled out a single white/pink rose :) It went well and she thanked me. I can tell it made her pretty happy and that made me pretty happy too. I wasn't very nervous but I was lost in what to do next (stuck in the moment I suppose) She took the lead and told me that she is going to put it in her locker to keep it safe; I followed. In the break-room was about three or so people, all ex-coworkers. This became a problem because I became too nervous to actually ask her out. All I did was give her a rose haha.
SO, my question is at this point, is it fine to just text her? "Hey want to go eat lunch after work?" It seems fine in my book but I've always heard otherwise. I would love some feedback :)

Fun fact: I've never told a girl I like her, much less ask her out; I have always been too afraid. I don't know where the sudden bravery came from but I hope it sticks :)
<bot>: Surprised my crush with a rose; forgot to actually ask her out and was wondering if texting her is 'acceptable' Reason being: I have anxiety