I think a fair way to treat it may be to set up a schedule for your equity to be vested, if you did not do that already. Say, typically your equity may be vest

I think a fair way to treat it may be to set up a schedule for your equity to be vested, if you did not do that already. Say, typically your equity may be vested over 5 years. If she had put in a year so far then 20% of her equity has vested. The rest will start accruing once she re-joins the company. That would be a fair way to go I think because if she does return then you can continue your partnership.