I am pretty sure actors will be given guidelines on what are off limits for an interview but I also feel that actors have liberty to say in their own words within the given limitations.
Surbhi comes across to me as a very ambitious individual with work as her priority, therefore, she tries her best to get along with all as far as it helps with her work and not to forget interviews are also part of her work. Well! viewers sometimes blurs the lines as interviews falls in a grey area that can be either interpreted as a means for actors to make their show and themselves popular or it can be seen as their real feelings, it all depends on the viewer's choice on how it is interpreted.
Surbhi is getting more experience with her surrounding and people and with time, priorities change, she used to say Russia is her fav vacation earlier but now she is saying South Africa and its all about changing priorities due to exposure to new things and it is quite understandable.
Surbhi might be genuinely missing Raquesh as they worked during rough times of QH, which might have required a lot of reassurances to each other and moreover she might be a friend of Raquesh offscreen too as she is friends with his wife with whom she had a good time in Dubai.