..to an indoor trampoline park, 30 minutes away, without you...would you agree to it? Would it depend on the person?

My ex-SIL just asked if she could take LO and her daughter to an indoor trampoline park in a few weeks for her daughters birthday. We are still close and I trust her, so I agreed. I felt a little caught off guard at first, and ran it by DH but he is ok with it too.