You need to be booked in a pkg OR room only resort reservation to book 180+10; however, anybody can book at 180 days. i.e. you don't need to be booked at a resort anywhere on site to be able to do that.
You need to be booked in a pkg OR room only resort reservation to book 180+10; however, anybody can book at 180 days. i.e. you don't need to be booked at a resort anywhere on site to be able to do that.
Without a confirmed Disney resort reservation, you may book dining up to 180 days before date of dining.
With a confirmed Disney resort reservation (DVC Points, Packages, Room-only, doesn't matter), you may book up to 10 days (inclusive) of dining starting 180 days before date of check-in.
180+10 is a description, not addition
So, using the example above, she could have made ADRs for 11/16-11/25 if her trip was that long. Any longer, and you fall back down into the 180 days before dining category.