Fledgling with a dead mother

The mother blackbird has been attacked a few days ago & been in bad shape. I'm presuming the male blackbird has been killed as he is nowhere to be seen.

Yesterday the mother crawled almost to the back door & I fed her & she fed the baby. But overnight she's died.

The fledging is still jumping all over her & I have put grapes oats mealworms & water around them.

This is where I need your help:

Do I move the body?

Do I reluctantly interfere with the fledging or see if learns to pick up food?

My garden is safe from land predators & there are lots of places for it to hide