I have very little experience of Mary Sue characters as they tend to not feature as much in the J/D stories that I read......I think when it comes to an alien life form and other worldly creature you can have a little leeway for "super dooper power"...and what you have described there is perfectly acceptable for a kick-ass OC as part of a continuing storyline....
The worst I have read recently - or rather skimmed through parts thanks to links and other readers of other ships in my fandom recc'ing - is a REALLY glaringly obvious MS OC in the SG1 fandom who is sooooo obviously a carbon copy of the writer herself living out her "happy ever after" fantasy of married & working life with DJ inc her tragic background & genius PhD, which is just unbelievable beyond words..well what I could read before having to give up.....
Trust me, what you have described above is nowhere near anything like that....
no subject
The worst I have read recently - or rather skimmed through parts thanks to links and other readers of other ships in my fandom recc'ing - is a REALLY glaringly obvious MS OC in the SG1 fandom who is sooooo obviously a carbon copy of the writer herself living out her "happy ever after" fantasy of married & working life with DJ inc her tragic background & genius PhD, which is just unbelievable beyond words..well what I could read before having to give up.....
Trust me, what you have described above is nowhere near anything like that....
xoxoxoxo