Tonight she's still looking after them, picking them up and putting them back in the nest. The nest has grown, twice as many bubbles as before.
She has to be blowing them, theres no one else there to do it!
I don't know that they are fertile though, used my magnifying glass and can't see eyes or anything yet.
Time will tell.
If they hatch I will be interested to see what happens - whether she will tend to them or eat them.
If they don't I'll set her up to breed properly, as this wasn't a planned pairing, and see if the roles go back to the norm.
At least I know she's a female as I was doubtful.