So sorry How tragic ! What a Bad day ...
So 1 1/2 months ..Poor Littles You dont have Barn cats ?
I would lock down the rest REAL Good till you know what did it ..
No barn cats. Had an outdoor cat when we moved here, but she disappeared after the neighbors moved in. Not sure if age or dog got her. Another neighbor down the road has cats that come around sometimes.
The rest go out free ranging. The spitz couldn't escape.

) I have noticed how kind people are on this group and willing to help I hope you get some new spitz and can console your daughter.
I hope you find out what did it.