Broody hen abandoned her 2.5 week old chicks - will they be ok outside w/o her?

[TGRREZ]

i had 2 OEG bantams go broody and they hatched their chicks together in the same broody pen and have been co-parenting 15 bantam chicks wonderfully for 2 weeks. however I sense they are finished and want to get away from the chicks. they keep running away from them and started pecking at them. one today was badly injured, scalped had to bring it inside. anyway, I think they are ready to the easy life, w/o chicks. the only issue is they chicks are only about 2.5 weeks old. they were raised outside. im in SC and its been about 82-85 I day and 65 at night. the chicks are like 1/2 feathered. doe anyone know if they could survive the 65 degrees at night w/o the extra warmth from the broody hens?

 

[thecrumbler]

Personally I'd take them in - moreso to prevent injury than anything. If they dont have a mama looking out for them, more pecking injuries could happen. Even just a couple weeks would helo, for them to get a little bigger without being harassed.