usually for this situation, its clearly that she is plotting something against you, if you have another job offer then its best to take but dont leave without reporting these to ur higher management...

if u dunt have a new job at the moment, then best is dunt resign, it's clearly she dunt like u hence is trying 2 forceu 2 give resignaiton letter. Bear in mind, that to terminate an employee is not an easy tasks and the process is very tedious and may lead to industrial court...if u plan 2 bring up the case to the industrial court....if she really dunt like u then she would have not confirm or terminate u in the first year before u got confirmed by the company ? am i correct...

my best advise is, stay on while look for a new job at the same time. Try 2 play a little politics by explaining ur grievances to ur higher management, although its kinda risky but its the best u can do...at least u re trying to fight like a man rather than being bullied by her...

if u are close with ur colleagues, then try to gang up ur colleagues and make that bond stronger, its very amazing that how good colleagues will stand up against a cruel boss...

Sigh..nowadays its pity that women who are in power are abusing the "weaker" men ...

on the other hand, would that be possibel to share the name of the company your working for and perhaps ur cruel manager name, at least we all can beware of this company/person in the future ?