She was attacked in the William Street area between 7.50pm and 8pm and detectives are appealing for any witnesses to come forward.
Three suspects, two males aged 32 and 43 and a 44-year-old female, were arrested on suspicion of grievous bodily harm with intent and possession of an offensive weapon. All three were charged on Monday evening and are due to appear before Lisburn Magistrates Court on Tuesday morning.
Detective Inspector Bolster has issued an appeal for anyone who was in the William Street area on Sunday night and who witnessed an assault, or anyone with any information, to contact Detectives in Lurgan on 101.
Information can also be passed anonymously via the independent charity Crimestoppers on 0800 555 111.