Bolli, I'm sorry to have to tell you this, but your suspicions are likely correct. I've been following Nivenor as you requested, and I'm fairly certain that she's had extra-marital relations with more than one individual within Riften. I have yet to obtain proof of her adultery, so please do not confront her with this information until I've secured it. I'll waive the usual charges for now, but expect full payment once the proof is in my possession.