She could be ugly. Hm, I searched on cocain effects on erection and found these:
There may be 2 reasons that cocaine itself causes erectile dysfunction. One reason is that cocaine is a vasoconstrictor, meaning that it causes blood vessels to constrict, and blood vessels in the penis need to be dilated in order for an erection to occur. A second reason is that cocaine interferes with the body's production of enzymes that are needed for an erection to occur, namely nitric oxide, and nitric oxide synthase, and myeloperoxidase; this effect has been studied and observed in rat models. Finally, as you already stated, it is also very possible that substances mixed into the cocaine may also be causing the erectile dysfunction.
Let's start with the opiates, such as heroin, methadone and so on. All of these are very hard on male erectile strength, sabotaging it in many different ways. Some of these drugs should be called Erection Killer, Anti-Viagra, Castratanol or something similar. One study looked at heroin addicts in treatment with methadone or buprenorphine and found that almost half reported erectile dysfunction, 24% saying mild to moderate and 18% severe. [1] Of course, that assumes that you survive: cocaine also is a fantastic clot builder and artery spasmer and heart attacks are not uncommon. [2]
ps. Freud experimented not longer than two years with cocain, I'm not sure if this is enough to get full erectile dysfunction.