Hi,
I just got called the Home office and got answer for my query.
My wife will not be able to get an ILR along with me as she is not a dependent on me.
The only way she could get the ILR is by converting her status to dependent on my HSMP visa.
For converting the status to dependent she had to travel back to country of her origin.
If she is not converted to dependent she could only get the ILR in her own visa capacity after completing 5 years.
Thats what they said.
Hope this could help someone with the same kind of problem.