No safety check?

That the changes to Jon were reversed."
"Nothing happened!"
"But we wished that all changes were reversable and the rock flashed."
"No we wished they could be reversed and that twopeople were needed to make wishes. Then it flashed, FLASHED. Oh no."
"What's wrong?"
"Karyn, we don't know if it can grant wishes that change it's power. When we wished two qualifications on it it could have granted only one and maybe not even that one. When has it ever flashed without us having to look away from the target. For all we know it was rejecting part or all of the wish."
"But we've seen that it only works with the others consent." Karyn said suddenly scared.
"All those wishes had time frames and triggers added. You wanted me smaller for as long as I was in the shower. You wishes our clothes would fit our bodies and we didn't check until after my concent. You wanted to be naked now, and so forth. We never tested the wishes on the stone. We may not be able to reverse the wishes."
"But I reversed my strength doubler." Jon looked at her puzzled. "Wished I could make body changes without the rock by saying 'stone: I wish...' Then I doubled my strength and then undid it when I got my luggage unpacked."
"Karyn. If the stone did grant the two people part of the wish then you never got stronger. Either your case was lighter then you thought or the power of suggestion did it. And if the stone didn't grant our two person wish then you don't need to touch the stone to make body changes but then you would be stronger then usual and just don't realise it's still in effect."
"So you're saying you're stuck?" Karyn almost began to cry.
"No, I just need to put my dick back on and the testosterone will reverse the changes and the ovaries will go away. So if... what what's wrong?"
"I'm sorry it got stuck to me and I asked it to go away and return me to normal. Since I didn't wish to be that way it granted it."
"Oh god." Jon was feeling dizzy. Tears started to run down his cheeks.
"Wait we don't know for sure that anything is wrong. We just need to try some experimental wishes to see what has changed and what hasn't. Then we can think of some wishes to fix this whole thing." Karyn began to cry too. "Look I've got an idea for a test. I wish..."