While I don't know the song she played on other two games, based on the combo alone, the song she played in BanG Dream! is Roku-chou Nen to Ichiya Monogatari (Six Trillion Years and Overnight Story) covered by Roselia, with Expert 29, highest in the game. Here is the gameplay video of both Expert and Special (also 29) Full Combo.
While I don't know the song she played on other two games, based on the combo alone, the song she played in BanG Dream! is Roku-chou Nen to Ichiya Monogatari (Six Trillion Years and Overnight Story) covered by Roselia, with Expert 29, highest in the game. Here is the gameplay video of both Expert and Special (also 29) Full Combo.