Employer demanding force resignation

My friend works as an institutional trader. She does trades on behalf of big institutions. Two things happened that led to employer demanding force resignation: 1. Typo while sending an email: My friend did a huge volume trade on the price agreed upon by the client. The trade went ahead smoothly without any issues. However, while sending an email to the client, she made a typo on the buying price of the share. The client made a ruckus of the same. Since my friend's company gets over 75% of business from this particular client, the HOD directly demanded resignation from my friend without any warning letter or memo. 2. Misunderstanding during a Stop-Loss order: My friend was told to do a Stop-Loss trade for a client. She made it clear to the management that an order of this size must be split into 2 orders. But the management said that she does not know what she's doing and that they have a workaround which will execute the order. However, when she proceeded with the Stop-Loss order, the trade got executed on the current share price and not the Stop-Loss price. The shares got sold at the current price of the share. This also infuriated the HOD and again demanded his resignation. Please advise what needs to be done in this scenario since she does not want to resign from current position. Can the employer demand forceful resignation? What can my friend do to stop this?