Hey Jo, that im aware its quite normal for kids to go 4-6 days without going, however as your daughter was going daily, then I can see why you would worry. If she is going every second night, this is still good.
Number 2's seem to be the hardest to train kids with during toilet training. Some get it straight away, and others will hold on for as long as possible and panic when it just starts to come out. Or, as with Pocket, wait until the familiar pull up is on.
For most kids I have toilet trained, this has been the chase. And with a little gentle encouragement, and a little bribery

we got there in the end!
I always use a sticker chart.... with incentive. You can do this two ways. A sticker chart, with the added bonus of a lollie for success. Its best to use whatever there favourite small lollies are (eg pebbles or marshmellows etc) and be prepared to have to offer them at breakfast. A deal is a deal!
Or a sticker chart, with the incentive of a very cool gift to be given when the chart is full. I like to buy these gifts and wrap them , and place them somewhere where the kids can see, but can't reach, for added incentive. Start the chart off small, with say 5 or so spaces to fill and then the gift to be given. If its too big, she may feel its too much like hard work, and will not bother trying. Once you have had success with that chart, make another, but make it bigger. Make the goals a little harder to reach each time :). This should work well for her, as you have said that she has previously been using the toilet, so she may have just lost a little confidence.
Good luck Jo!
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