If they are still alive 2 weeks after you found them then yes mum is still around. Female hogs don’t spend all their time in the nest with the babies, especially as they get older as it get’s too hot for them, but she will be nearby.
At 80gms the babies are getting a good size and often one will get curious and wander out of the nest – usually a boy hog – and it’s often they get killed or injured so keeping an eye is a good idea and popping it back.
However, other than that please try to leave them alone as much as possible.
If anything does happen to mum you will find they all start coming out and they will also be peeping for her regularly. You’ve not mentioned that so I assume all is well.
Make sure you leave water available for mum and food if you can, but not close to the nest. You will only have a few more weeks to keep the dog away and they will be weaned and on their own to disperse
How wonderful for you to have a nest to watch
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