That's good that she went for a family court rather than a criminal order. You'll have a hearing, the purpose of which will be for her to try to convert the order into a permanent order. The order you've been served with should tell you what she is alleging against you, and those are the facts that the hearing will be dealing with.
She will get an opportunity to show evidence -- your texts, for example, witnesses, her own testimony, whatever she has -- to show why she needs a permanent order of protection. Then you will get an opportunity to use whatever evidence/testimony you have to show that you are no threat to her and that she does not need a protective order and that the order should be lifted and the matter dismissed.
When both sides are finished the judge will rule and either lift the order of protection if you win, or grant the permanent order if your wife wins.
Here's a good overview of the general process.
If she doesn't show up for the hearing you can ask for the order to be dismissed. If you don't show up but she does, she will automatically get the permanent order.
There's no need for you to have a lawyer, but if she's got one, then it would be a good idea for you to have one too to level the playing field.
I'll be happy to answer any follow ups if you have further questions but will be turning in for the night shortly. If I can't answer again this evening I will do so in the morning. You don't have to sit at the computer and wait for me, as you will get an email indicating when I've responded.