I think Pori is paying the doctor to lie to DK about his mother so that she can marry him. Again it is causing misunderstanding between Disha and DK.
The only reason I am thinking this way is because on Thursday's episode DK told Pori about him telling the truth to SUM. Also I'm thinking in positive terms because I don't want Disha to marry Vedant or DK to marry Pori.
This is one of Guha's chaal for us to keep watching TD, but little do they know that us viewers love watching the chemistry between the 2D's and not all the misunderstandings.