I would be too. I am a feet and leg guy for sure. But I would also be sniffing her panties while stroking with her socks. If I had a hot roommate like that, I would definitely let her catch me jacking off, leave my door cracked while showing, etc.. I would be looking for any opportunity to show her my cock without making it too obvious. If she ignores you, nothing lost, but she just might like to watch or join you in the shower. If you catch her watching then get a little bolder with what she sees. I wouldn't just come out and tell her you are using her socks. That would gross out some girls, but others would find it hot that you get so turned on, and you don't know which she is, yet. But once you catch her watching a time or two, then it would be OK to let her see you using her socks, because you would know she enjoys her show and would be interested in knowing how turned on she makes you.