Twins can be read as a possible “two-fer.” But usually when both are quite highly accomplished, equally compelling for an admit. For both of you, a tippy top college will be a reach. I was in touch with one of the quads, early on and the the sorts of things they were involved with, the actual challenges they took on, the level of accomplishment, was very high, including some ECs that are themselves very competitive.
Her uw gpa and AP 3 scores are an issue, set her behind the competition for an Ivy or other tippy top. For both of you, the non-profit and history finalist are not tips, not the extent of the ECs many of your competition will have. The fact your family is very international is a fact, not a challenge you took on or an accomplishment. Nor are knowing several languages or getting a scholarship for a university sunmer program.
It will help to be better informed about what your targets look for. Be realistic and make the right choices.
Best wishes.