Agreed But I guess if I had to choose with no details I'd say 2 $25 items because then it feels like less "plus one" she has to buy for herself. And gift receipts are great in case she ends up only really needing one
I don't have twins, but I would either find something that was $50 and she registered for 2 of that she already has one purchased and still needs the extra of, OR buy two $25 items that she registered for two of. If none of these work, I would find something that was $50 that she only requested one of because I appreciated the larger gifts a lot at my shower.
I'd say you can just buy anything off her registry that you feel like. She wanted all those things so that's why she put them on her registry. So it just ends up being about how much you want to spend and what appeals to you.
Re: Twin moms, question about baby gifts.