Line profiles over an orbital cycle computed with the one-layer model of Moreno et al. (2005) for MACHO 80.7443.1718 assuming β₀ = 1.95 and the masses, radius, and orbital elements given by Jayasinghe et al. (2021). The unperturbed and rotationally broadened profiles (red dots) are superposed on the predicted profiles (black) which show significant distortions only in the orbital phase between just before periastron (φ ∼ 0.97) until ∼0.3 in phase after periastron, consistent with the duration of the luminosity increase.