Your Cat Ate My Pet Fish!!!!

Oh my word, the horror!

I am extremely embarassed.
My neighbour knocked on my door this morning. An acquaintance, rather than a friend. I mean, our kids have played together once or twice, but that's about it.

She seemed hesitant and asked, pointing to Merlot, if that's our only cat. I said "No, we have another one." and tried to explain what she looks like.
She wasn't sure if it was the cat she was talking about, so I showed her some photos on my computer.
YES, it was definitely Misha.
Apparently this Forward little feline has been jumping through the neighbours window in the evenings and helping herself to some attention.

My neighbour said that she has started closing the windows after one night finding water all over her floor from the fish tank.

Last night she forgot to close the window.

Misha ate her 4-year-old daughter's pet fish!
I wanted to die of embarassment. What on earth do you do in a situation like that?

Do I need to feed my cat a more fish-rich diet?
or is it because it's Easter?
Maybe she's Cat-tholic...