Definitely possible.
And for the record, I am a feminist, and violence against women is an issue that is important to me. I didn't say one word about Leanne until hearing the testimony at the hearing, even after the bizarre funeral comments and tasteless obituary. She very well may be exhibiting signs of an abused person who is fearful, or she may not be.
The "Did you say too much" is just too much for me. It implies, at least for me, that she planned this with RH. At first I believed that he acted on his own, now I am not so sure.
Until I hear more, that could possibly point to mental or physical abuse, I am going to go with my gut, which is this marriage was very dark for sure. I'm just not positive, at this point, that he was all the darkness or if she was equally as dark and their dynamic is what produced this horrible murder.
But I hear what you are saying and if more comes to light indicating Leanne was going through some form of horrific abuse, mentally or physically, and was terrified of him..I will change my mind. Until then, I think she is an accomplice and I have no idea what her reasoning was or is. Her jumping to defend him is certainly bizarre. And that can point to a sort of Stepford "state of mind" or it can point to her complicit involvement.