OCD Medication. Will it be effective?

Hello Doctor, My wife aged 40 years went through Depression phase for last couple of years and doctor advised Fludac syrup (5ml after breakfast) as she couldn't take tablet/capsules. She took syrup for @1 year and depression symptoms are no longer visible however OCD for cleaniness still remains and this is causing anxiety in her behavior and her (as well as family members) lifestyle has changed significantly. After taking Fludac for 1 year, she somehow made it as a ego issue and stopped taking medicine for last 5-6months despite all the convincing from family side. She is not even ready to visit doctor. In order to improve/solve her OCD/Anxiety, I am trying to find out alternate ways to give her the medicine without she knowing. Is it safe to mix 5ml of Fludac syrup in a cup of warm milk to disguise and give it to her after breakfast everyday? Will it be effective? Thanks for your kind suggestion in this matter.