How often do your in-laws/husbands parents come to visit you? How often do you go to visit your in-laws? General advice on the situation would be appreciated!

We live about 45 minutes from my in-laws but it has been almost a year since they have driven out to see us. Whenever we invite them out, it is always met with the response of they have other plans or for us to drive out there. I would not mind but my in-laws are fairly young, early 50's and they regularly drive 5+ hours to see my husbands sister.

My father who is much older than they are drives 35 minutes to see us quite regularly and my Grandmother who is close to 90 drives the 35 minutes as well but my in-laws never seem to have time or want to come visit.

There is a bit of background to the situation, my husband used to be very close to his parents, calling his Dad at least 1-2 times week and seeing them almost every weekend.

We know my husband's sister does not care for me or my husband anymore and would ultimately like for them to cut us off. She has made this clear as she does not care for my family's background and continuously comes up with new reasons to create tension with us. We have tried to address this and work through it but the things she is upset at us for are things we can't change!

I fear this is why our in-laws won't come to see us anymore...but drive the 5+hours at least once a month to see her.

Am I being overly sensitive and looking into things too much? I know some people say the relationship with a daughter is different than that of a son, but I see their actions are hurting their son and this upsets me. Is there someway I can address this without creating a fight.