Going by your brief description, we are not able to determine what went wrong. Legally speaking, your so-called senior doesn't have the authority to send you out because he is not the appointing authority. Legally, no one other than the appointing authority has the power to do so.
Friends have touched upon the sensitive subject of "sexual harassment of women in the workplace." I think everybody should understand the topic first and then discuss whether Anshoo falls into this category or not. Please refer to the attachment for some details about it.
I'm not sure whether you are covered under the Factories Act or the Shops Act, but the provisions under both are more or less similar.
Secondly, if she had complained against you, what picture did she describe about the incident that weighed more heavily in the whole episode? You need to talk to your senior or management to find out what went wrong. Most probably, her part of the story must have been very severe as it resulted in the marching orders for you.
If you consider yourself genuinely blameless, which could be supported by eyewitnesses, you can fight it out. Otherwise, the choice is yours.
Regards,
Kumar S.