I'm sorry you had to deal with that, I've learned from personal experience that its best to not disclose mental illnesses of any sort to anyone you don't trust completely to keep it confidential.

The Americans with Disabilities Act is just a piece of paper, its doesn't do shit frankly. As soon as people realize you have a mental illness alot of people will stop treating you like your a person.

The worst is that people will use your disclosure against you, use it to invalidate your feelings, beliefs, self-agency and self-worth, like how those mothers used their knowledge of your illness against you.

This goes way beyond Girl Scouts. In professional spaces, it could end your career. Your coworkers could shun, or harass you. Your boss could suddenly find reasons to pass you over for a promotion or transfer you away, ect.

If someone finds out your mentally ill, at best you break even and their opinion of you doesn't change. Thats a rarity, far more likey is that social knowledge of your mental illness will at some point come back to harm you.

Best way to combat that risk is to never let them find out in the first place.