Russian airstrikes regularly target Ukrainian city
Sarah Ashton-Cirillo is from the US
Sarah Ashton-Cirillo was journalist before she enlisted
Sarah Ashton-Cirillo wounded on battlefield in February
Shrapnel from a Russian artillery shell struck Sarah Ashton-Cirillo on Thursday
Country's activists remain defiant as they mark war's first anniversary
Ashton-Cirillo tells the Blade, 'I want to serve this fight for freedom, this fight for liberty'