Helaena defending King's Landing

I had an idea for Helaena (on Dreamfyre) to go 1v8 on Rhaenyra's dragons during the Fall of King's Landing. The idea is that she's stalling for time until Alicent's riders call back Aemond on Vhagar. Dreamfyre dies during the battle (instead of getting killed at the Dragonpit, which I maintain was a daft way for her to die) but Helaena survives. The smallfolk of KL see Helaena as a valiant woman who tried to defend them from the "evil" Rhaenyra, which is why her suicide sparked the riot and the storming of the dragonpit. But also idk if this would work. Opinions?