she offered to buy me out at a reduced price. With the guise of doing me a favour. I just feel this is wrong on so many levels.
This follow up post doesn't really add anything to what you told us in the original post (except that we now know you're not in the U.S.). Here are your options:
1. Continue to do nothing and hope that, one day, you start receiving income.
2. Accept your sister's buy-out offer.
3. Retain an attorney to scrutinize what your sister is doing and, if appropriate, take legal action against her.
Simply complaining won't be of any benefit to you.
I want to force her to pay me my fair income.
Then pursue option #3 above.
if this isn't working, she needs to buy me out at fair market value .
I've already told you that there is no market for your beneficiary interest in the trust, so there is no "fair market value."
remember this is a family business we inherited 50% each, my share in trust with sister named as trustee, her share is not in trust but probably in shares since the business is a corporation (S Corp).
I your "share" is in a trust, then you didn't "inherit" anything. It sounds like your sister owns 50% of the corporate shares and a trust owns the other 50%. If, in fact, your sister is proposing to buy the other 50% of the shares, she would be buying them from the trust, not from you (although, as a practical matter, that may be a distinction without a difference since you'd need to sign off on the transaction either way).