Han was many things. A smuggler, a scoundrel, a rebel, and working real hard on lover. But he wasn't a coward. Yeah, he'd screwed up telling her like that, but he could fix it. Probably.
Also, at any other time, he'd be deeply amused that her first issue with the idea was strictly logistics.
"I know, we haven't." He still was pissed off at Jabba for that. Sure, the Hutt had already been dead at that point, but his hibernation sickness had proven an... impediment for the one time they had even come close. If he never returned to Tatooine, it'd be too soon.
Han squeezed her hand back, doing his damnedest to be comforting. It wasn't his strong suit. "She's from our future. She's fully grown. I'm sorry. I screwed that up."