I realise she's very young to leave Mum, but have little choice.
A family I work with have 10+ cats, including this kitten.
The others from the litter left at 5 weeks old 
They are very keen to give her away as soon as they can. I persuaded them to keep her for the extra fortnight, but if I don't take her on Friday she will be homeless.
They do not have a litter tray, so the cats wee and poo in the house. She has been eating solid food, mainly given to her by Mum Cat, who has been taking food from bins and bringing it home to eat with the kittens. They have not been wormed or de flea'd, and are quite skinny.
I feel the kitten would be better coming home with me, as they are financially unable to feed or care for her properly, but I am worried about her young age.
I have booked a vets appointment for Saturday.
What can I do to make the transition easy for her? I do work, but only school hours, and have the weekend to settle her in before I have to leave her alone. Am so nervous, and keen to do my best after her difficult start.
Any cat experts out there tonight?