Maybe he'll just have to spend some time in this form then for her. Goku had mentioned, on the train, that he'd made himself and Gohan stay transformed to help build up tolerance and control and the energy reserves. No reason Trunks couldn't do the same...

Another kiss, breathing against her mouth, before Trunks needed to focus. So, carrying her to her asked for spot, it's only slightly reluctantly he let her down. Not out of his arms though--just down on the ground. Because his hand went to her chin and pulled her in for one more kiss.