Shiv is not forcing Anandi. He thinks it is a great opportunity. A painter who is very choosy about the choice of his subjects for painting is asking Anandi to be his subject and Shiv thinks it is an honor.
He doesn't want Anandi to restrict or restrain herself.
Anandi herself is confused. She feels uncomfortable but can't figure out whether it is because of the cultural difference between her background and the painter's background or whether it is the painter himself who is making her feel uncomfortable.
Anandi on one side if her reluctance is because of the so called difference between cultures she doesn't want that to come in between her and the painter and she wants to overcome that barrier so she said if the family is also okay with it she will be fine with it.
But only later on I guess she will realise that she felt uncomfortable for the right reason.