Thank you all for your help. I am seeing her agin hopefully on Monday to complete a more thorough neurological examination and find when exactly the weakness occured.

When testing the patient for the Babinski response there was no plantar reaction at all and her sensation was deminished in her right leg comapered to her left. Also her proprioception was decreased in her her right foot and ankle yet a contributing factor may have been her very poor concentration levels.

I have asked her GP to reffer her to get an EMG.

There have been no signs of a DVT when I've been treating her but I'll keep an eye out for it.

Her general musle power in her leg seems 2/5 but I'm going to do a more thorough assessment when I see her next to find out which muscles are being effectected the most. So far it appears her knee extensors are the most affected which makes me think she may have damaged her femoral nerve.

With a cocaine induced stroke is it likely that her only symptoms would be monoparesis?