子供 こども部屋 へや 使用 しようおばさんだったら
kodomoe yamishiyō obasandattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of 子供部屋未使用おばさん

1. If I were an aunt with an unused children's room.; If she were an aunt with an unused children's room.

Tara Conditional