Kevin, thanks for your email and for reaching out to me. I can tell you that as a woman myself, you may have to go more than an extra mile to get her attention again even though you guys have a nice chemistry working between the both of you. Of course, nothing is impossible with God. I would like to say this upfront--before you take any steps forward in this matter, you need to examine within yourself whether or not you really want to ask her out and possibly begin a dating relationship, or are you feeling a little bit jealous of the fact that you have found out she moved on and may have found someone else. So resolve that within yourself first just in case she has indeed moved on, and you may have to accept that.
If you think she is worth it, pray and invite God into this matter and then begin the steps to talk with her privately and for "heaven's sake," don't keep dragging your feet. Hope can sometimes be a double-edged sword with a woman. Of course, having hope is never a bad thing when the possibility of a great godly relationship is on the rise, but not when a relationship is bad for you. The thing with most women is if they see even a small glimmer of hope, they will "fan the flame." But of course, when a woman is done "fanning the flame," she's done if you know what I mean.
So to answer your question, I don't think it's too late to try. Get your strategy together, be genuine in your approach, be clear and not vague with you feelings, and just simply explain to her why you waited. I know all of this is a risk. However, if she means something, you will take the leap of faith even though there is a possibility that she may have moved on or may feel differently about you, but that's ok too because at least you would have learned something more about yourself for the next woman of interest that crosses your path.
Kevin, thanks for reaching out and allowing me to share your question. Have a wonderful day!!!