How would you distinguish between
He needs his plant.
He needs her plant.
She needs his plant.
She needs her plant.
would you add mwaume/mwavuli and mwanamke/msichana in cases the situation is not obvious ? Like Anahitaji mmea wa mwanamke. Or Mwaume anahitaji mmea wake. or Mwanamke anahitaji mmea wa mwanaume. etc ?