'even'? "tą" would be used exactly because it's a feminine noun because it's a feminine form. For Instrumental ;)
Let me put it this way: as we are teaching Polish here, we have to be harsh and consider it incorrect. However, an average Polish person wouldn't bat an eye if you used it. Especially that you're a learner. Using "tą" in Accusative may be the single most common mistake Polish people make when speaking their own language.