Characters are Onodera Ena (right, f) and someone who appears to be her mother (left, f). (that is to say, the manga only shows Ena's mother during scenes from Ena's childhood, but she looks very similar so I'm pretty sure this is her.) Tags updated.
I think this is all the tag updating I have in me tonight. Maybe I'll come back to this and make character / copyright tags some other time.
Should an artist's art for their own series be tagged the same as art for another artist's series? The tagging guide doesn't seem to say.