My heart goes out to you and your daughter. I know the feeling too well.

I had a “Napoleon” too but on my cell phone contacts, he was (and still is after 15 years), “SD’. Yeah, that’s for “sperm donor.” My kids both busted me. My younger son, at age 8 thought it meant “stupid dork.” My older son at age 12 went with “small dick.” Either one works.
Stay strong and keep the faith… not just for you, but for your five-year-old.

By the way, I left LA after losing my house in the 1994 earthquake and now live in pretty much unaffordable Sonoma County.