"Oh, really?" Color her a little surprised, considering what she knows of Trunks in that part of his future. But considering she's also met the other version who is with Mai and just doesn't know it yet... she's more shocked that there's a formal agreement here if she's honest about all of it.

But in true Bulma form, she notes to herself more than Cassie : "Somehow Trunks of the future but further in the past figured out how to establish things... it's a minor miracle."