What do I tell her?

My mother in law asked me if physical abuse was going on in my relationship today. The only person my husband loves more than anything is his mom. He's never hit me, but he has restrained me or drug me around by my shirt collar, held my mouth etc but has never hit, slapped, or anything. I don't want to tell her but we're going through a divorce and I also want her to not just think I'm terrible. Her and I are pretty close and to them I'm just leaving their son for stupid reasons. Should I tell her yes there is physical abuse?? Or what should I tell her?? I have pushed him a couple of times or punched his shoulder but I'm much smaller (I know it's not right still) and have never hurt him. Would it be easier for her to hear that I have been physical? He's been much more physical with me many more times and I fear how shell see me (she believes men are in charge)

He and I usually get along most of the time but when we don't we really don't. I don't want her to look at her son different. He is the favorite of the family and his parents never let anything go ever.