Or violence or even death. Certain cultures don't take to kindly to pregnancies outside marriage, or maybe the family disagree with the choice of partner. A cousin works for the app company, leaks the information about an unexpected pregnancy to a conservative father or uncle. Girls is shipped of to family back home and is tragically stabbed to death a few days after arriving.
Most people who collect data of this type of data lacks imagination if they don't think it can be misused.
More likely they believe that because they only collect the information they aren't culpable for what other people do with it.
Good point about family violence threats. That wasn't in the article, but makes sense.