If I recall correctly, there was an elder (PO? I forget) in my first congregation who had very extensive tattoos from some whispered-about past. The first I saw of the tattoos was some private (ie, non-congregational) get-together (details are fuzzy... I was only 11 or 12), which was when I realized I'd never seen him in short sleeves before. He always wore a long sleeved shirt and a suit jacket when doing anything witness related.
So yeah, I don't think the congregation TattooGrl is involved in will make her remove them, so long as she keeps them covered. But I think there may be pressure, subtle or otherwise, for her to change her attitudes about being proud of her beautiful pictures to being somewhat ashamed of the mistakes she made when she was "worldly".
Question: you mentioned earlier that some of your tattoos were dragons. Have you gotten any talk about dragons being bad creatures yet (vis a vis Revelation)? I would be surprised if someone wasn't shaking their head about this young lady with Satanic images all over her body...
-T.