Vintage Japanese Or Chinese Art Oriental Shy Geisha Girl Painting Signed

In good condition. 10in x 8in big art piece. This was my great grandmas and was in her bookshelf for years. There was a fold in it that you barely see now and there looks to be that might be a water mark on the back but I’m not sure if it is because the front doesn’t seem to be damaged by liquid. It is old and never been framed so there is wear to it but it will still look absolutely beautiful in a frame and on a wall! It needs a new home to get some more years out of it! See photos for details and measurements