I was in exactly the same situation and going to the house and asking your sister in law to leave won't work. The police will not get involved in civil disputes and will simply tell you to go to court and then tell you to leave the house.
Your wife can use this against you and apply for a non molestation order which you don't want.
Best thing to do is keep your cool, you are already having contact so lets not compromise that.
I know exactly what you are going through and its easy to focus on the small things and lose track of the bigger picture which is to secure good and consistent contact with your kids. I know how hard it is but you must not lose focus and do not let your wife's behaviour disable you. Your hearing is on a matter of weeks so if you can agree to some sort of contact schedule with your wife, draw it up sign it and email to court with your position statement at least a week before the hearing, if the judge likes it, they will sign it off and that will be a final hearing.
hi
agree with other posters. that's such a minor issue. it's almost certain that one day when the kids are with you, you will have to run some errand and leave kids with a family member. nothing wrong with that as long as they are in safe hands.
Thanks everyone. I took your advice and didn't go in the house. I did tell my wife's sister that I'm getting fed up with her lies, her sister looked shocked and couldn't reply. I recorded everything in case my wife tries to twist the story.
lol you still went there? thats asking for trouble.
I was supposed to. My wife said I could pick my daughter up as she wasn't there. It's only when she is there that apprently I'm not allowed to the house.