yep her colour is called ginger tabby

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i go by the colour with the eyes

at around 5 to 6 weeks their eyes are starting to get a little green or yellow tinge and by 8 weeks the blue is almost or completely gone

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its s very good indicator

,if you ever get to see a litter of kittens grow up keep an eye on their eyes you will see what i mean

, although it wouldn't work with breeds that keep their blue eyes lol .
if you go there again try taking some cat food with you

i hope the others get saved , so sad

, is the mother cat owned by anyone ?
are you 100% sure she is a girl ... lol sorry im just so used to seeing ginger males .
honestly over the yrs i have been rescuing i have only ever had 2 ginger females and when you take into account i have been rescuing for 15yrs and average 120 kittens a year the odds a so slim.
glad you didn't give her cows milk

cats as like dogs are lactose intolerant so it would have given her the runs .