TU question

i got a gift for the shower from a couple who is divorced, signed aunt and uncle do i send a TU just to her or both of them at her address or two separate ones to each address? he prob doesn;t even know he sent a gift. i'd be surprised if he remembered who i was. any thoughts?

ok, that's how i wrote it. i was second guessing myself. i threw away the envelope with the address on it. but i'll send it to the same address i sent invite, to her address and addressed to both.

Thanks so much!

ETS: i guess i'll post both names on the envelope too but on under the other right?
thank goodness this is the last one. MIL screwed up the guest list bad and this person didn't get an invite so i wanted to make sure i did this right.