▁actress ▁op ined ▁that ▁Jac ▁is ▁better ▁as ▁a ▁single ▁woman . ▁She ▁also ▁added ▁that ▁the ▁failure ▁of ▁the ▁relationship ▁allows ▁Jac ▁to ▁" t ough en ▁up " ▁and ▁return ▁to ▁her ▁mean er ▁person ality . ▁ ▁Har per ▁confirmed ▁in ▁October ▁ 2 0 1 5 ▁that ▁Jac ▁would ▁return ▁during ▁the ▁following ▁month , ▁and ▁Jac ▁returns ▁in ▁the ▁eigh teenth ▁series ▁episode ▁" A ▁Del icate ▁Tr uth ", ▁originally ▁broadcast ▁on ▁ 2 4 ▁November ▁ 2 0 1 5 . ▁Har per ▁revealed ▁that ▁Jac ▁would ▁return ▁" with ▁a ▁b ang " ▁as ▁she ▁rec laim s ▁her ▁status ▁as ▁the ▁head ▁of ▁Dar win ▁w ard ▁and ▁re ass esses ▁the ▁w ard ' s ▁structure ▁and ▁staff ing . ▁Marcel ▁added , ▁" She ' s ▁in ▁full - on ▁Jac ▁mode ▁now ▁and ▁dem ands ▁to ▁know ▁exactly ▁what ' s ▁going ▁on ." ▁Jac ▁immediately ▁dec ides ▁to ▁make ▁her ▁junior ▁do ctors , ▁Oliver ▁and ▁Z os ia ▁March ▁( C amil la ▁Ar f wed son ), ▁prove ▁themselves ▁by ▁hand ing ▁them ▁bad ▁jobs . ▁Marcel ▁explained ▁that ▁this ▁method ▁works ▁and ▁gives ▁Jac ▁the ▁best ▁do ctors ▁on ▁her ▁card i oth or ac ic ▁team . ▁Following ▁her ▁return , ▁there ▁is ▁more ▁emphas is ▁on ▁Jac ' s ▁b itch y ▁person ality , ▁something ▁which ▁Marcel ▁also ▁wanted ▁to ▁rein force . ▁She ▁thought ▁that ▁the ▁character ▁had ▁proved ▁popular ▁and ▁remained ▁on