Yes, that's the simpliest way to do it. You can also reach her lust path if you fucked Tal after spending the night with Nora. Losing 20 affinity points with Nora is not really a problem for her lust path and you can always rebuild some points later.I thought the simple way to start Nora lust path is to force her in MC's bed? Maybe install a WT mod would be easier
But anyway in this path, your relationship with her will be kinda special and challenging, not exactly sweet love lol..