@dec+1ehobvzh
Don't know what you're talking about on many fronts. First off, you do not submit your medical leave application to HR - it goes to the leave unit. IN THEORY HR does not ever know why you're on leave but will most likely find out by word of mouth.
Tip: if you were to go on a leave, NEVER tell your management (and only those you intimately trust) team why other than to say it's a protected LOA and that you're estimated return is x-x. They can and will retaliate against you if it's other than physical. You're entitled to 12 weeks of UNPAID job protection, meaning they for all intents and purposes have to return you to the same job or something very similar. That said, the "very similar" moniker is where Ford can and will spin things against you.
Also, Ford (or its agents) fights these tooth to nail no matter how much they tell you they care about your mental health and well being. You can always fall back on the unpaid job protection status (if not approved for pay) but go over the 12 weeks by a small amount and you're subject to losing your job; getting thrown into some pit; or expected to drive an ungodly distance to and from.
Don't expect to declare a sudden over taxed/burdensome mental health situation and expect to get paid. In many instances they'll look at your treatment and or declaration of your condition leading up to the leave to determine if you'll be approved for leave pay. Bottom line is your friend has to determine if her own condition is serious enough such that she can go 12 weeks without pay and be subject to a different reporting relationship. Also, your friend should also absolutely ensure she qualifies for FMLA protection guarantees prior to initiating the leave.