You're most welcome, tweenyb.........it's a shame more good folk have'nt replied on this thread that no more than i do, but I would assume that they cant force the child to spend time with their grandparent/s if the child feels that he/she does'nt want too.
A lot would be to do with the age of the child/children involved and the court would obviously ask to hear what they say, in private probably, so they can make a decision on what is best for them.
I do wish you all the very best, as this is obviously causing you a bit of worry at the moment and there must be a good reason as to why you dont want contact with the grandparent.
If it is a reason that would cause the child potential harm or upset, then the court would use that to make their decision, as i've already mentioned. :0)
Kind Regards
yogi