As rishi thinks that tanuja had send katayani bai to him , so I think in this accident track, rishi may think tanuja done it intentionally which will leading tanuja to burst out on rishi, & giving him back.
After tanuja leaving , things start getting out.
Like when tanuja saved rishi from fire , maybe there will some cctv footage of that event, so that family can see it was tanuja who saved rishi.
Beeji finding tanuja's pic in home & remember that night incident, confronts doc , it get cleared by accident tanuja was given tanu's face not by any plotting.
Nidhi - vidhi try on nakul leading the truth coming out that tanuja was never after nakul.
Tanuja not being daughter of sandy, not involve in plotting of bani, neha, still taking all d blames silently.
These events will make major impact on rishi & beeji & raaj. Which will make rishi to go after tanuja , tanuja avoiding him, making him restless.
it was easy 4 tanuja to back out , claim not to be member of khurana family but still kept mum. which will make rishi see simmalirty b/w tanu & tanuja ,, tanuja may not want to meet him , avoid him. he may regrets which in yesterday episode katyani bai said.