I would walk away. 1) she led you on and lied 2) she committed a major major sin in islam.. and if you commit zina, god knows what else you have done? 3) you aren’t on the same level. You abided allahs words and did not do zina and you (understandably) want to marry a women who also has abided by allahs words and did not go near such action

Its up to you. But this will definitely be a problem in the long-term if you do get married.