[@Arthanus] That's okay. SimpleD and I had an rp scene off site so we could wrap it up without holding the RP up. Basically it comes down to, Odessa promised to protect Sonya so she could use her magic to control the battlefield, like creating a fog, winds, etc (similar to the other two, but with wind and water mixed). Since there's an amount of trust between them already, Odessa would feel it best if she could personally ensure her safety. Its a mix of morale and practicality I guess. 

However if Silas still doesn't like that reasoning, then Odessa would go with him and apologize to Sonya.