but why wrote:
I don't get people not impressed with this and just want to demerit her efforts
rooting for her - she has a bit of a challenge ahead the next few years given the year the records were set and the validity of age/birth-certificates - she'll have to take off a full minute to make the next age group next year which seems impossible but who knows
12y 16:44.80 Grace Ping (USA) 17 Jun 2016 Greensboro NC USA
13y 16:26.83 Grace Ping (USA) 31 Mar 2017 San Francisco CA USA
14y 15:22.00 Nancy Wambui (KEN) 12 May 2001 Nairobi KEN
15y 15:08.42 Ling-ling Guo (CHN) 23 Nov 2001 Guangzhou CHN
16y 15:08.36 Meseret Defar (ETH) 05 Aug 2000 Heusden BEL
What is interesting about the age 14, 15 and 16 WRs is they were, as a group, set 15 months apart. It's has now been nearly 16 years since the age 15 WR was set.
Overall, consider all age records, it has been more than 9 years since any single one was set.