Annulment for doing fraud by hiding baldness (Female pattern baldness)

Can annulment given for the fraud of hiding baldness by girl (Female Pattern baldness). Married couple of months back and after marriage I can see bald spots at the top of her head and crown area and thinning. She probably had hormonal imbalance during puberty as she has facial, back and stomach hairs (called Hirustism). Basically she has a Ludwig scale classification wherein women hair loss happens from top and crown. This is unlike men where hairline is lost. Due to this she was able to hide baldness using long hairs and clips which I was not able to recognize before though I met her 3-5 times before marriage. My question is if she had this plan shouldn't she should be open before marriage rather than hiding it using hair styling. Would this come under fraud for annulment? I am trying to accept it from more than a month but the thought of this fraud is not going away so I thought to ask a query on this website.