An attacker grabbed a pregnant woman and spat several times in her hair.
Gemma Taylor then punched a man in the face after he tried to intervene.
Taylor, 21, of Dickson Road, Blackpool, pleaded guilty to two offences of assault.
She was bailed for pre-sentence reports and will be sentenced at a later date by District Judge Andrew Jebb sitting at Blackpool Magistrates’ Court.
Martine Connah, prosecuting, said Taylor saw the 16 weeks pregnant victim in the street on February 9. They had once been neighbours in a block of flats. The victim put out her arm to maintain space between them, but Taylor grabbed her by the hair and spat into it several times. Taylor, who had six previous convictions for assault, said the other woman was the aggressor and that she was first pushed in the throat by her.