It depends on perception. I for once couldn't really figure out what exactly is Maya's problem hence her actions make me think is she an antagonist or is she being deliberately put under bad light. If they had showed her disease or showed her coping with her psychological problem, I might have actually sympathized with her. Right now, automatically my sympathies are with Arjun guy because he is being shown as the tortured one in the relationship. Even though, personally I liked the actress who plays Maya in other serials and found Arjun actor to be average.
If she is indeed suffering from some OCD, depression, mental breakdown or psychological issue; writers should make sure that she is shown fighting with it through some proper doctor's assistance, instead of manhandling Arjun. Question is, why should she been shown as manhandling a guy in order to prove that she is strong or she is an un-conventional woman? Is this the only way to prove that?