Your sunburst wag is probably hiding in there somewhere. If you think she is caught up in the filter, you need to get her out of there asap. As for your new fry, they will eat the fish flakes. Feed your fish the way you normally would, with the exception of breaking some of the flakes very small. If the mum is no longer with us, keep feedings extremely minimal.The fry will not eat much in the first week of life. Also, the fry are smarter than you think. I am on my third litter of twinbar platy and the fry tend to stay away from the current of my filter until they get big enough to handle it. They also hide very well so you may have more than you're aware of. So keep the filter going, do not overfeed, and find your platy mum!