Wendy Williams‘ guardianship is being investigated by Adult Protective Services in New York City, and TMZ has obtained the call for help that sparked the whole thing.

A caregiver not associated with the guardianship — Ginalisa Monterroso — sent a letter recently to APS formally requesting a probe into what she saw as “troubling circumstances” surrounding Wendy’s treatment.

In the letter, obtained by TMZ, Ginalisa raises issues about Wendy’s restrictions at a New York assisted-living facility, where she’s confined to the 5th-floor memory unit and not allowed to leave without approval from staff.

The letter mentions our recent TMZ documentary, “Saving Wendy,” where WW breaks down her life in isolation.

Monterroso says Wendy’s confinement to the memory unit is bad for her mental health … and she worries it also violates her legal rights.

APS is taking her concerns seriously … as we first reported, there are now two separate investigations into Wendy’s guardianship — one by APS and another by the NYPD.

The mother of the 5-year-old girl fatally shot alongside her father, rapper G$ Lil Ronnie, is telling the world she’s not losing sleep over her dead daughter … saying we all gotta go someday!!!

Those were the recent words Shamon Jones, who has been crashing out on IG Live the past few days mourning her slain child and her baby’s father.

Jones made it clear to her live-stream audience her daughter R’mani dying doesn’t make her upset, but it’s about how she died … the elementary-schooler was ambushed in a hail of bullets as she celebrated her birthday with Ronnie last week.

Meanwhile, Charleston White is also celebrating Ronnie and R’mani’s death … just not the same way as Shamon.

As we reported, Ronnie and R’mani were gunned down together at a car wash on March 3 and police feel they have the men responsible.

The unfolding investigation has been pleasing Shamon and her friends, who have been going live taking shots with every break in the case.

Wendy Williams may be a big step closer to freedom, because a psychiatrist examined her Monday and the results are clear — Wendy’s mental capacity is fully intact.

Sources with direct knowledge tell TMZ … Wendy scored 10 out of 10 on a psych exam, called a “capacity test.” She was asked 10 questions to determine if she was alert and oriented, and she answered every one correctly.

TMZ broke the story … Wendy went to Lenox Hill Hospital in New York City Monday where a psychiatrist spent time with her.

The results of the test are radically different from the assessment of the guardian, who has filed legal docs saying her condition is getting worse, not better. Wendy was diagnosed with frontotemporal dementia, a diagnosis she disputes. She was not examined Monday to determine if she has been misdiagnosed.

We’re told the results of the capacity test will be forwarded to the judge in the guardianship case.