The Fonglet (that's her nickname btw) is in the main draw here:
Rd1: R Fong (GB) v K Yergina (Ukr)(q)
A match that Rebecca should win, she outranks Yergina by over 400 places. Yergina's won 2 matches in the qualies but that shouldn't be any advantage given that this 10K is at the same venue as last week's one.
Yergina is only 16, she lost in qualies for last week's Israel 10K.