Father winters baby

Doing the 100 Baby Challenge I'm up to my 30th baby. I have culling turned off, but my second baby Bonnie I had with Father Winter. When I noticed her missing from my friends list I checked my family tree and she is gone from that too. All my other 29 kids are there so I don't know what became of her. She had blonde hair, yes, but then so did about 25 of my kids.

Can this trait be passed down to the next generation without woohooing the next Father Winter every time? I'd like to make this trait a staple in the family but it'd be nice to not have each kid be arranged to have a baby with a Father Winter.