I'm sorry to hear you're going through so much adversity right now. That's a heavy load for anyone, much less a young person. Of course you are stressed.
The one thing you don't need to worry about right now is your future love life. Guys will still be interested in you regardless of your past. Everybody has a past. Everybody has baggage. Mature, intelligent men know this. A guy who's looking for a partner with a spotless, drama-free background had better load up on supplies because it's going to be a long ride.
Things that happen to us are beyond our control. You didn't choose to be abused or to lose your brother. That's just life. No one gets through it unscathed. As unfortunate as these events may be, they make us who we are, for better or for worse. Adversity builds character and helps us value things that others without the same experiences might not. Losing my mother at a young age gave me a deeper appreciation for women and taught me an indelible lesson in living in the moment because life can change quickly. Did it suck? Absolutely. But it made me who I am today, just as your battle scars will make you a unique individual. That's little consolation when you are the midst of hard times, I know, but you will appreciate it as you grow older and deal with other challenges in your life. So will men who are looking for a woman of substance and strength.
Keep your chin up and keep fighting. Things will get better, I promise you.
Thanks for the question.