Perhaps a basic rules question for the more experienced players but can you use her ability from home since it creates presence at the current battlefield? For those without the card on hand her ability reads:
"Battle: If any enemy units are at the current battlefield: Move your target Personality there. You may discard a Bushido Virtue card; if you do, straighten him."
I ask because looking at Ikoma Hagio exp's ability they threw in the extra wording of, "Even if Hagio is not at the current battlefield....", which would otherwise imply that Tomoi would have to be at the current battlefield to use her move in ability.
Anyways hope someone who is more knowledgeable with the rules can clarify it

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Lion Clan • Samurai • Tactician • Kolat
"Dealing with the Dark Lord and the Spider a Great Clan? The Empress's decisions prove the heavens fickle nature towards Rokugan. The Kolat were right as it is time for mankind to govern over its own affairs free from their influence"
