Muslim divorce

Please suggest me the right way to give talaq to my wife, After marriage we lived only 70 days together. She went back to her home and her father started complaining for silly things, which includes even bathing soaps,chapati counts etc. Few days back my wife gave application to SP office which was transferred to family counseling committee. In application she mention all the possible rubbish what she can, which include dowry demand, abusing, and even my fake visit to her hometown for asking dowry. During counseling she accepted that all the aligations is false and she just made it to creat pressure on me. She also recorded the statement at there is no such dowery demand ever, and signed the statement. In conclusion I also said I will take her back as soon as possible but did not disclosed the date. Now I have decided to give her talaq. Kindly suggest me how should I do it, either by qaziayt (Sharia law) or by filing divorce petition in civil court. It is confrim, as I initiate any means her father will definitely counter acctack with every possible mean.