A question for the Shi'ites ...

It was brought to my attention that the Shi’ites believe in Mus-haf Faatimah. Is this true? And if so, could you be kind enough to explain what is the Mus-haf Faatimah?

thank you.

I have never heard of this term "Mushaf Fatima" in my life. I will email my cousin
in Pakistan to ask my grandfather about it.

Yes, if you could also let me know when you find out