A simplified model for the time-dependent, spherically symmetrical combustion and extinction of methanol droplets is extended to account for a Lewis number of water vapor different from unity. A parametric study is performed, showing that, with water absorption and good mixing in the liquid, the burning time and extinction diameter achieve maxima for water Lewis numbers slightly less than unity in the gas phase. At high Lewis numbers, the smaller diffusion coefficient reduces the amount of water absorbed, and at lower Lewis numbers, the larger diffusion coefficient increases the rate of water loss to the atmosphere, reducing the water concentration at the flame and the water absorbed in the liquid. The extent of absorption, therefore, maximizes at an intermediate Lewis number.