Yes. Even if an 8-9 year old is having curious sexual thoughts, they are only that and they will need quite a few years to understand the social and personal import of those. Suicide indicates something immediately very serious and damaging to such a young child.
While of course there could be abuse, and the mom should please research that, most likely the boy was feeling feminine. Not sexual at age 9. Just wanting to play with girls toys and wear girls clothes. Who knows whether there is anything to do with his future orientation. Maybe he did indeed have innocent crushes on boys, which at 9 aren’t sexual, just wanting to be near them, maybe give them a kiss or hug.
Children need to be allowed their feelings. No matter what. And they need to have somewhere trusting to share them, and if the feelings are problematic, they need proper help dealing with them. This saves lives. Even a child at 9 with sociopathic feelings CAN STILL BE TURNED AROUND. So of course a child with gender issues can be helped.