Does a plaintiff have to prove that she and the victim were engaged to be married?

Here petitioner has alleged that she and the victim "were engaged to be married, held themselves out to be married and were engaged in an actual and permanent family relationship." She and the victim were the natural parents of a daughter who was five months at the time of the accident. However, petitioner failed to allege the duration of her relationship with the victim or to indicate whether it had been continuous and exclusive during that period of time. Furthermore, although petitioner alleged that she and the victim had "pool[ed] resources and share[d] expenses," petitioner alleged no specific facts, such as the existence of joint economic burdens, common ownership of property, joint tax returns, joint savings or checking accounts, which might indicate a committed and enduring relationship. (See Butcher v. Superior Court, supra, 139 Cal.App.3d at p. 70, 188 Cal.Rptr. 503.)