No I dont think so either...especially if Purvi knows Varsha then she will recognize her..and will know Soham is her Aai's own son and therefore her brother...just like Teju/Ovi...
Purvi has to be careful though. The only good thing is Varsha does not know who Purvi is as she came along after her disappearance with Soham...it is possible that Purvi will realize who Soham is and start trying to befriend him without telling him the truth...so that she can figure out a way to bring him back to his real parents...
Arjun will probably try to rescue her and end up in them middle of this mess...Soham will realize that Arjun is the one who recognized him, chased him, and released his sketch to the cops...which will make him hate Arjun of course and he will either try to take revenge on him through Purvi...or even after truth is known about his real parents, join Teju, Ovi, and Sachin in hating Archana and since he also hates Arjun too: will do his best to try to create trouble for ARVI.