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While the baby is adorably cue, that is NOT a baby-safe cage. Until you get a baby safe cage, put mom and kit in a cat carrier that the baby can't get out of. Because the baby WILL get out, it's not going to just sit with mom. a FN is way too big for a mom and kits, both in wire size and inside space.
Also, what're you feeding mom? That food looks like it has a bunch of crap in it (might just be bedding).
We had a cage from when she had her first baby and the dad is in a big cage of his own. I am having my husband pick up some new food on his way home, and will have him get something else for a litter pan.
we are not going to breed them anymore, this was their second and last kit. We kept the first baby and will keep this one also. We weren't told about food but we are glad that it was brought to our attention so that we could change it. We only want the best for them.