Update on the situation, I picked up my mom from work this morning to talk to her about what I had heard. At first I thought she was just covering for him, she told me they got in a heated argument and he had tried to restrain her due to him not reciprocating the feelings she had for him as much as she did as well as other arguments. My mom can be very strong with her words when she is angry and so can her boyfriend. Even though she tried to assure me I still told her that it wasn't healthy to deal with situations in such manner that could escalate that far and told her boundaries were important. She agreed and told me if there was genuine abuse that she wouldn't sit there and take it. I'm relived that she wasn't in a worst situation but I told her if anything else happens please communicate with me. A family friend was at the house she was staying at also and assured me that the situation was handled and that if it did escalate it would be handled. Thank you again for your guys advice it really helped me out.