Ovarian Cyst Combined With Dvt

A month back my friend had a minor accident bruised her toe and kness..nothin much to it..it started swelling in 2 days time..After a week the doctor said the knee wounds infected so put her on an antibiotic course...he changed the antibiotic 3 times in the course of a month..cos the swelling didnt come down(meanwhile she was also on medication for hormonal imbalance..once her periods start it doesnt stop so 1 years back he put her on estrogen and then after some time progestrone for 3 months and then later since nothin worked she started with ayurvedic tablets which were helping but she had to keep on takin it so she used to take both the antibiotic as well as the ayurvedic tabs) Well the wounds healed completely but the swelling never came down we went to the ortho hes asked for a scan..when the scan reports came back he asked us to consult a vascular surgeon..He diagnosed it as extensive DVT..he told us both both the major blood vessels had clotted in the injured leg all the way upto the tummy and it had spread to the next leg as well..got her admitted..heparin injection were adminstered, stocking on both legs were put and we went for a scan again the next day...this time they found a cyst 5cm in diameter in the ovary...The vascular surgeon said a minor accident couldnt be the cause for such an extensive DVT not to the extent to reach upto the tummy and spread...they have doubts on whether the cause being because of all medicines shes been taking...and how should we go about the cyst treatment since the tablets she on now are blood thinners...should the cyst be treated surgically or on medication?