No, she is saying it screwed with her PERIOD, causing it to be late. I can ovulate sometimes on the 12th of the month and then turn around and get my period a week later. Luteal phases can vary depending on external factors, ie. two female roomates who had regular periods on different dates suddenly start having their periods at the same time. Another example, I may ovulate on the 5th of the month sometimes, but then turn around and three days later have a period. I can also ovulate my normal time, the 11th and have a period as scheduled, which is the 19-20th of the month. That being said, according to your data, I could have fertility problems because my luteal phase is only 9 days. I can tell you now that that is not the case lol. Every time I have been pregnant, it started with the same ovulatory pain either a day before sex or the same day, whatever.
My point is, the luteal phase begins DURING ovulation. Which means, if you ovulate late, then the luteal phase starts late, thus, the shedding of the lining of the uterus begins late, thus your period is, technically, late. Also you have to take into account that even an average woman will have different luteal phase times. I have already used myself as an example. It can take 12 days from my last period to ovulate and then another 12 days to have my period. It can take 12 days from my last period to ovulate and then take only 10 days to have another period. Etc, etc.
Oh, and just as a test, tmi here, but I checked myself this morning, because I am having eggwhite discharge and that mettlesmerch, and sure enough, the ovulation test says yes.