Daughter leaving home

[nowtherearethree]

My DD had been with her lovely boyfriend for five years. They moved in together after three years. Sadly last year they split up. My dd came back home
She has now decided to move back to the city they both lived. She doesn't know anyone there as her ex boyfriend has now gone travelling. Aibu to he terribly concerned about her.
She is 23 and a PA with a small company

"I think I would feel better if she had someone with her for company"

I can understand this sentiment too - my own mother always wanted me to be with my peers when out or travelling, for all sorts of reasons. Lots of people do move and travel alone though, and are fine.

Op, your daughter will make new friends, honestly.