If he persisted, she should have gone to the police.
Wouldn’t have hurt if she had a handgun and could have shot the lunatic.
This young woman, being mormon, had been taught all her life that the men of the sect who "hold the priesthood" deserve respect. As he was her "home teacher" she had a duty to allow him into her home to bring her the word of the mormon "gospel".
That being said, even though she found him "creepy", her conditioning resulted in an automatic trust of him.
Her confusion over his motives is perfectly understandable, and had she gone to the bishop chances are he would have brushed her off because the dude had a "calling" likely given to him by this same bishop.
One has to understand that these "home teachers", whether the men of the "elder's quorum" or the women of the "relief society" are, by the nature of their callings, given the right by the members to come into their homes at any time, often without prior notice.
I don't know of any Christian religion that demands this.
I'm not LDS, but am very familiar with the LDS religion and culture. I'm surprised that at BYU, which is by design a sort of marriage market with thousands of eager-to-marry young adults organized into singles wards, that the issue of romantic attractions between home teachers and female teachees isn't pretty aggressively managed. Seems to me it should be absolutely routine for bishops to regularly remind all the members of their ward that anytime either a home teacher or a female teachee perceives any romantic attraction between the two, that he or she should immediately make a request for a change in assignment.
And dating between a home teacher and one of his teachees ought to be explicitly prohibited, with an instruction that if a home teacher wants to ask one of his teachees out on a date, he must first request and receive and change in the home teaching assignment. If such an instruction isn't in place, then it wouldn't be unusual for a home teacher to come to (not inside) a female teachee's apartment without a companion, for a social rather home teaching purpose, any more than it would be unusual for any random single man wanting a date to go alone to knock on the door of a young woman who lives in the same complex to ask her out. From the story here, it doesn't sound as if he actually did go inside her apartment -- just waited at her door until she arrived home, and then asked her to go to the laundry room. If such an instruction IS already in place, then this young lady certainly was remiss in not requesting a change of home teacher after the first time he asked her out on a date (as was he, for not requesting a change before asking, but he's obviously operating well beyond the "remiss" line).