同学你好，该知识点来自沪江网校《大学水平直达CATTI二级（笔译+口译）【三年畅学开学季专享班】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。

同学你好~
这个句子确实理解起来有一些难度，助助将句子还原一下，则是“Telling them they can't have an abortion at 15 weeks is an undue burden for those women, as well as for women who haven't been able to scrape together the money and time and everything else in order to obtain the abortion.”as well as 后边的内容与those women是并列成分。之所以同学看到的是原文的句序，是因为英语有“重尾原则”，避免头重脚轻，所以将as well as后边较长的内容置于句子后部。
综合来看，for sb就是单纯的补充句子成分和信息，不是同位语。
希望助助的回答可以帮助到你~祝学习愉快~