Someone guiding and helping Namrata?

Is there someone who is forcing or hypnotising Nammu to do these things providing money and men?

I am sure she is doing all this by herself

Hmmm now I'm also thinking the same thing is there
Someone helping her or she's doing this by herself
And what will she gain by getting all the shivlings
Like what's the purpose behind all this

Also as you said she is educated

The most important question here is how did she learn about those nine shivlings? Gauri cannot fathom what those nine shivlings signify although she has been raised in a Pujari's family. Neither Shakti nor Thakur seem to know about it or at least nine shivlings doesnt seem to be that important to both the cpusins although this temple is centre of their power struggle.Apparently there are no available resources that can link those nine shivlings to this temple or else Rahul or at least Inder would have researched about it.The old lady too doesn't know about it or she would have told about it already. Only Shambhu baba knows about it.

she may have read about those in some book

The nine Shivalinga may be extremely valuable. And either she's read about them and is after them for value or some such thing or someone else has brainwashed her into getting them.
So besides Namrata there could possible be another person masterminding this whole fiasco.

I wonder why they are so valuable though