The best way to know what to do is to ask. You never want to make a move based on a guess. If she said she isn't ready that is your answer. However I would let her know that you are interested in her and will wait until she is ready. She should very impressed with your ability to take into account her wishes. Men don't always do that. She will be very touched by the fact that you respect what she wants. I would have this conversation first. The fact that you have told her how you feel will ease your anxiety about missing out on a good thing.
If she says she isn't ready then ask her what she does want. Ask her if you can have a date without a relationship. A friend behavior versus a dater's behavior is very different. That will give you an idea of what she wants. Then you are allowing her to dictate the next few months but also letting her know that you want a romantic interest. There is a big difference between friend and dating each other so you allow her to make the boundaries. She will respect you for this.
I think if she said she isn't ready yet then she likes you but is just going through something. If she wanted to be your friend that is what she would have said. The word yet suggests that she has you in mind when whatever she is feeling is resolved. Anything this valuable is worth waiting for so check in with her regularly and what it is she wants. It reminds her as well that you are there waiting.
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