i wanna be annoying

there's a trans woman in my class, so i felt a bit safer there as another trans woman. come to find out now though that she's talking behind my back about how she thinks i'm fake trans and that i'm not trying to pass at all despite the fact that i only came out two months ago and she's been trans since the age of three. 

any ideas on what i should do to play into it more and subtly irritate her without her noticing? i feel like being annoying, but i also don't want to hurt her in any way. so what should i do to make myself look even faker to her? obviously i'm gonna respond to only her in a very manly voice just to ruffle some feathers, i feel like i could do more though