@Kyra she’s had a bit of a cough and cold, so maybe it’s this?
I have the same cold as my boy and my throat really hurts. So I assume his throat is sore and hurts with the milk. Try offering cold porridge with her formula mixed in etc. also if she’s snotty and blocked up they struggle to breathe when drinking so they push it away xx
Is she ill at all? My boy has been refusing his for a couple of days as he is snotty xx