I don't know if this is possible but is there any way I could link my transformice account to steam? My mistake if this is a really easy question to answer.

Well, I don't see the need of linking your account to Steam. :/
If this is about getting the steam badge, you can simply use your existing TFM account to connect through Steam.

Also, please don't create single question threads. Use the existing Q&A instead. Please post there if you still have a problem. :)