Don't worry about that just yet. When she's older, she'll reach out and ask you about them out of curiosity when she's ready. That's when it's probably best considered. The wrinkle of custody in different countries does make the idea of visitation a potentially more risky scenario, so maybe it's best done when she's 18 and can freely leave on her own.

But regardless of the age, she'll one day be interested. And whatever truths she finds when she starts the process, will just have to be truths that she discovers.