I've seen it happen with winstrol. Keep in mind that winstrol is a DHT based steroid with harsh effects even in men (hair loss, acne, etc), so how could it NOT effect a woman?
I'm sure she would like to get toned and all, but please do it natural. I don't know if the perceptions of what other guys think matters, but 99% of guys will find the veiny, ultra toned look to be disgusting.