Include Denise McCluggage, she raced in the 50's and 60's. She was the founding editor of Autoweek (and their best writer IMO).
I first noticed Milka in sports car racing, the team didn't let her do full stints because she was too slow. I think Indycar let her race even below the minimum speed because she brought sponsorship (they finally applied the min speed rule and she left the series). I don't know if she has improved because I haven't followed ARCA.
She hasn't, not much anyway. I watch the televised ARCA races and she is usually a mid packer even in ARCA. Only 2 top tens in 21 starts.
2013 FINAL DRIVER POINT STANDINGS, ARCA Racing Series presented by Menards
After Event #21, Kansas Lottery 98.9, Kansas Speedway, Kansas City KS, 10/04/13
POS-NAME-------POINTS--STARTS--WINS--TOP-5--TOP-10
1-Kimmel, Frank--5735--------21----------4--------15-------- 21
2-Mingus, Mason-5370---------21---------0----------5---------18
3-Boston, Justin--5120---------21---------0----------8---------16
4-Hessert, Tom---5005---------21--------1-----------7---------12
5-Williams, Josh--4825--------21---------0-----------1---------10
6-Mitchell, Mason-4660--------20---------0-----------6---------13
7-Duno, Milka------4405--------21---------0-----------0----------2
2013 FINAL DRIVER POINT STANDINGS, ARCA Racing Series presented by Menards