TheTruth123 said:

Sometimes when people do that it’s because they’re angry with themselves and others about what they posted or feel they didn’t get the response they wanted. Maybe she’s tired of being talked about. Or, it could be as simple as her wanting to be distanced from all the Prince stuff and be her own person. Not all of her music is about Prince. Some of us think 10,000 days is about her ex-boyfriend Zack especially because of the Power Rangers Backpack lyrics (or whatever the exact lyrics are). Which means she was really into Zack who she was with in 2015 I think, but since she was also a protege of Prince was very happy when Zack brought her a raspberry beret, a nod to that respect and thoughtfulness. If you look at the lyrics for 10,000 days you’ll see it is probably about someone other than P. Songwriters are like that. They write about more than just one relationship. It also goes to show you we don’t know what other people are thinking about all the time... [Edited 12/9/18 6:18am]

True. I think she may have just thought there were too many posts about Prince or just too many photos in general. She also deleted the photo with her mom that she posted for Mother's Day 2016 along with several others. That's true about all of her music not being about Prince and I also think that "10000 Days" and "Shake Your Memory" are probably about Zack and the 'raspberry beret' reference was a nod to Prince. She did seem to be really into him for a while and I think she may have been in love or at least thought that she was at the time. She posted something recently about the importance of "remembering your why" and moving forward and it seems she is carrying through with that.

[Edited 12/18/18 17:11pm]