<human>: Summarize the given text in a few sentences.

A little explanation is in order here. My wife and I are preparing to move from the U.K. to the Netherlands and while I've been working in .NL, my wife's been dealing with getting everything ready in the U.K. 

Our cat (named Small) was always a 'daddy's girl', and got pregnant just before I left. My wife did an admirable job 'grandmothering' the kittens and after I left she and my mother in law went and had Small neutered (or 'done' as they call it). This was about one week after she stopped nursing the kittens (1 boy, 1 girl). 

Now however, she can't seem to get along with the kittens at all and hisses and fights with them. I've returned to the U.K. to celebrate Christmas with the wife and we're planning to take the kittens and their mom home to Holland with us after Xmas. Our cat is so hostile to the kittens at the moment though, I'm starting to wonder if it's a good idea at all to take her with us. Is there anything I can do to make her either calm down during the trip (they're going in the pet-kennel on the Stena Line ferry together) or is there a more permanent solution perhaps?

Please help, Reddit. I just want my old sweetheart of a cat back!
<bot>: cat got pregnant, we had her done after the birth of kittens. Now she's an agressive bitch towards them. Reddit, help!