Like other said, she saw gossip about herself and then panicked and deleted everything.
Natalie (My Daily Sweet) had a
thread on Gurugossip where ladies critiqued her gaudy style, bragging ways, and consumerist tendencies. They called out her ignorance in attending her lectures with a Chanel bag and Hermes scarf while her fellow graduate students were in backpacks and sneakers. She made a video where she said the Notre Dame fire in Paris was terrible because she had to stay in her hotel room and couldn't get pictures to celebrate completing her first year! Tacky as hell.
Someone revealed that she quit her Big Law corporate job -- she actually had a job similar to Joe's! -- to go back to university and get a PhD in human resources psychology or something like that. They also speculated on her income sources and parental support -- she had a super fancy wedding and tons of designer goods (purchased new and in-season from Chanel, Gucci, Celine, etc.) but her apartment was old and small and she didn't seem to do much but shop and vlog.
Natalie joined GG and said that while she didn't mind the criticism
(yeah, right), she wanted the information about her degree removed because she hadn't disclosed that. To be fair, she hadn't explicitly said "I am leaving my job to attend this specific university for this program" but she had said she was going back to school and people did some very basic online research. No one ever posted her full name on GG, so how would her classmates and professors link her to GG?
Then a few days later she posted a voiceover video saying she was dealing with personal health issues and she deleted her entire online presence, including social media accounts.
Her and Elle were never close -- I think they spent maybe five hours together in their entire lives. So I don't get the whole "I don't know her" thing from Elle but it's also not like they were besties and went through a major breakup. Elle probably did forget about Natalie after she quit YouTube, she had enough going on with Special Someone Single Dad, the Rick fiasco, and shipping her crap across the country.