A friend of mine was playing with her Bootie plug for the first time a few days ago, and she had used more than enough lube for insertion and on the toy, and because of using TOO much lube, the plug did a complete 360 turn around in her rectum and the bulbous part effectively rubbed against or scraped/scratched, now bruised the back wall of her rectum. She definitely thinks it's bruised because it hurts to sit and is tender when delicately cleaning the area during showering. She can pass stool without pain though. She is going to her doctor tomorrow because her anus has little blood blisters all around the circular part of the anal opening, and it's puffy. It's not hemorrhoids, we both know that much. She probably just bruised something when the Bootie hit her there and had a rubber band like "whacking effect" where because it was silicone, it's pliable and effectively "thwacked" her in the back wall of her rectum.
We're wondering if there's a best way to bring this up to her doctor tomorrow as not to be judged and humiliated. She's afraid that she won't ever be able to have anal sex again or that the doctor will take the cautious approach and tell her to never do it again.

Any advice would be helpful!