Best news I've had in quite some time!
I made the call and brought her to her mom. You must understand that I am with 12-15 hrs of sleep in 4 days and that on the couch instead of my bed. My cat was over anxious all this time with the sudden rise of my activity and the new guest in the house. Kitten keeps calling me more and more frequently and not for food or due to some pain but just for company (she stops crying when I am around), and when I am with her my cat howls and calls me too. Its crazy. I was enduring this silently due to the critical situation and will again if it becomes again critical.
Other than that she is as strong as her healthy sibling right now. Equally fast and alert. In my judgment she has more need of her mother than of me at this point. That flea infestetation won't be dealt with anytime soon anyhow; Also her sibling has no fleas that I noticed. Maybe she got them during the time she was in coma and abandoned?
Her mom immediately accepted her, brought her to the clearest corner of the yard and groomed her. Already some of the filth I was afraid to remove with wet cloth is cleared. Mommy let her nurse her. I will be monitoring the situation and provide feed every 3-4 hours, which I hope she won't need should mom cat continue to nurse her.
Maybe share some pics of the baby, the colony and your own kitty some time? We will be grateful