Until a Certificate of Title is issued (or you lose or transfer title some other way), you are the owner and can remove your roommate. The foreclosure lawsuit does not change your ownership interest, though a judgment may. Although more facts are needed, you may not be evicting your roommate, but rather "ejecting" her. Needless to say, it involves filing a lawsuit. For that you should contact an experienced real estate litigation attorney.
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Even while the foreclosure process is going on, you are still the owner. Until the foreclosure process is complete, it is still your condo and you can begin eviction proceedings. If there is a lease, non payment of rent would be a violation of that lease.
My office handles landlord tenant cases. Please feel free to contact us for assistance at (954) 867-6518.
This answer is for general purposes only and does not establish an attorney-client relationship. Contacting an attorney to fully discuss the matters in your case is always the best course of action.