How you cope with knowing

So I came to USA almost 3 years ago to live with my husband.So I left my mom in Bosnia (she is living with her boyfriend) and she doesn’t have any income and I’m sending her money every month.So after I came here she went to Austria to work (I didn’t know about this,till today). When I asked her why she told me she wanted to earn money because she didn’t want to always take from me.And she admitted to me that she was rapped there.Can you imagine my shock then (I’m 20 weeks pregnant and my emotions kicked even more),I started to cuss yell (yes I know I shouldn’t).Why she didn’t tell me that before but she is telling me know (yes better now then never) but for me it is huge shock.She didn’t report that to police-guy told her that if she reported him she couldn’t go outside our country-travel.So she was scared.Now every time I close my eyes I see her how that happened how did she feeling in that moment

(About the job-she met some friend in our city and he told her that his son is living in Austria with his wife and 4-5 kids and they needed help moving stuff from one apartment to another.So basically she went there not knowing anyone.)

Please any advice how to cope with this 🙏🏻