Hi EmilyB
Don’t beat yourself up too much. Sometimes hogs turn up where they’re least expected and we can’t always help disturbing them by mistake.
It’s hard to say, from a brief description whether it was an actual nest or not. It could also have been a daytime resting place.
Not sure how big the hoglet was but If it was very small, I might have been inclined to get them checked by a hog rescue carer, just in case Mum decided to reject the hoglet. (Just a thought in case similar should happen again). But it’s good news the food was all eaten.
Hopefully Mum will be back soon with hoglet in tow. If you are going to offer supplementary food in the future I would stick to just the cat food and water.
Keep us posted with any news. Good luck.